How big is a 10 000 gallon pool

The cost to install an inground pool is $35,000 on average and can range from $28,000 to $55,000 and sometimes upwards of $65,000 for special customizations and extra features. An added hot tub ...

How big is a 10 000 gallon pool. If your pool volume is 15,000 gallons, then one turnover would be equal to 15,000 gallons. This turnover is required every 12 hours, or twice a day. Pumps, on the other hand, use a slightly different description of "gallons per minute" or GPM. Think of this a little like the miles per gallon (MPG) quoted as gas mileage on your car.

The filter flow rate must be rated at least the same GPM as your pump, or higher. With pool filters, it’s best to err on the larger size so it can handle the power of your pump. A helpful rule of thumb is to choose a filter with at least 1 square foot per 10,000 gallons pool capacity. Bargain shoppers beware.

Assuming your swimming pool is 24ft long and 15ft wide and a depth of 10.5ft, its volume would be: 24ft x 15ft x 10.5ft x 7.5 = 28,350 Gallons. The required minimum flow rate for 2 (6-hour) cycles is: 28,350 Gallons / (6 hours x 60) minutes = 78.75 GPM. Your swimming pool filter must supply 78.75 gallons per minute to meet the two …Discover the Magnitude of a 5000 Gallon Pool! Dive into the ultimate guide to this impressive residential oasis. Uncover the ideal dimensions, ranging from a...A 20000-gallon pool measures approximately 40ft x 20ft x 5ft (LxWxD). Dimensions determine swimming space and maintenance costs. Consider the surrounding area and pool material’s durability before installation. Install safety measures such as fences, gates, and alarms for peace of mind.300. Desired Pool Stabilizer: 70. 0. 300. Recommended 60-80ppm. Calculate. PLEASE FILL IN ALL FIELDS! The main purpose of stabilizer (also known as Cyanuric Acid, CYA or Conditioner) in the water is to protect chlorine from the destructive Ultraviolet (UV) rays of the sun. Without stabilizer in the swimming pool, the UV rays of the sun will ...Subtract this temperature from your desired temperature of 85°F. 85°F – 73°F = 12°F. Next, divide the 12°F by 8, which is the number of hours required to fully heat the pool. 12°F ÷ 8 (hours) = 1.5° per hour. So, the heater has to raise the water temperature 1.5° per hour in order to heat the pool in 8 hours. Step 3.DETERMINE HOW MANY GALLONS THE POOL HOLDS. If you have a rectangular pool, multiple your pool’s length x width x average depth. This is found adding the depth of the shallow to the depth at the deep end and dividing by 2. Once you have the average depth, use the following formula to determine your pool’s water capacity: …It is also beneficial to consider the process of filling up the pool as it will provide an indication of how much water bills could increase with regular use. Luckily, it’s actually quite easy and straightforward to calculate how long it takes for a …

Need help moving your pool table? Check out our guide for the best pool table moving companies near you. Expert Advice On Improving Your Home Videos Latest View All Guides Latest V...Sand filters: Require a flow rate of 50-75 gallons per minute per square foot of filter area; Cartridge filters: Require a flow rate of 25-35 gallons per minute per cartridge DE filters: Require a flow rate of 2-4 gallons per minute per square foot of filter area Plumbing and Pipe Size. The diameter of your pool’s plumbing pipes will also impact …Size and Capacity: This tank is approximately 10 feet tall and wide by 70 feet long and will hold 24,000 gallons when filled to 80 percent capacity. Notes: 30,000-gallon tanks will most commonly be installed at propane bulk storage facilities or at properties that use a significant amount of propane in short time periods.Your pool volume. 2. Apply the Rule of Thumb. Now, the general rule of thumb for 3-inch tablets is to use 1 tablet for every 5,000 gallons of water your pool holds, per week. This number is also rounded up to the nearest 5,000 increments. For example: You need 1 tablet for a 5,000-gallon pool. You need 2 tablets for a 9,000-gallon pool (rounded up)3.14 × Radius 2 × Depth x 7.5 = Pool Volume (Gallons) Oval or rounded rectangle pool. 3.14 x Length x Width x 0.25 x Depth x 7.5 = Pool Volume (Gallons) Kidney-shaped pool. Measure the widest points of your kidney-shaped pool to determine the A and B width lengths, then plug them into the equation below: (Width A + Width B) x Length x 0.45 x ...For a 10,000 gallon pool with an 8-hour turnover rate, the required flow rate is 1,250 GPH. Selecting Your Pump Size: Finally, you can choose a pump size that meets or exceeds your required flow rate. For a 10,000 gallon pool with a required flow rate of 1,250 GPH, a pump with a flow rate of 1,500 GPH or more is recommended.

Saltwater pool systems with manufacturer ratings between 40,000 - 60,000 gallons maximum* ... 52000-260-000 (7) CMP Powerclean Salt Ultra 760 Complete Salt Pool System with 3-Year Limited Warranty, for up to 60,000 gallon pools ... Pool gallon size ratings are maximum limits with chlorine generator equipment running at full …Standard pool dimensions usually measure something like 10 x 20, 15 x 30, and 20 x 40, with an average depth around 5.5 feet. 10 x 20 is considered a small in-ground pool, while a 20 x 40-foot pool is on the larger side of things. On average, a 20 x 40-foot pool can hold up to 30,000 gallons.The Bucket Head wet/dry vac attaches directly to a standard 5-gallon plastic bucket to make an inexpensive shop vac for your home or garage. Expert Advice On Improving Your Home Vi...Discover the pool size by gallons and liters, to the standard shapes. A handy typical use column will help to know what the dimensions allow as activity. ... 16,000 to 20,000 gal 60.500 to 75.000 ltrs: 36 ft x 14 ft to 40 ft x 16 ft 10.9 m x 4.2 m To 12.2 m x 4.9 m: 3 ft 6 in to 5 ft 4 in 1 m to 1.5 m: Swimming Laps: ... How big or small is ...

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Example pool - If a pool has a volume of 10,000 gallons then you should buy a filter that can handle up to 30,000 gallons every 24 hours. 30,000 divided by 24 gives you 1250 gallons required per hour. 1250 divided by 60 gives you 20.83 gallons per minute of flow. In this example a 10,000 gallon pool would need a filter capable of filtering up ...For your backyard pool, free chlorine should be around 2-4 ppm (parts per million), ideally nestled around 3 ppm. For commercial pools, 3-5 ppm is fine. Do you have your reading? If so, let’s move on. Measure Your Pool Volume. Next, you need to measure how many gallons of water are in your pool. You can use my calculator below to figure that out.Calculating Turnover Rate. To find the right pump size, divide your pool's total volume in gallons by the desired turnover time in hours. For example, if your pool is 15,000 gallons and you want a turnover time of 8 hours: Turnover Rate = Pool Volume / Turnover Time. Turnover Rate = 15,000 gallons / 8 hours.Suppose you have a rectangular pool with a length of 20 feet and a width of 10 feet. The average depth of the pool is 5 feet. Using the "Pool Square Footage Calculator," you can determine the pool area, water volume, and chemical amount as follows: ... Pool Area: 200 square feet; Water Volume: 7500 gallons; Chemical Amount: 0.975 gallons ...

Pool Length m: 10: Pool Width m: 6: Pool A. Depth m: 1.4: Pool surface area sq.m: 60: Pool surface area sq.ft: 645.6: Pool Volume cu.m: 84: Pool volume litrs: 84000: Pool Volume USGallons: 22176: Turnover time hr: 6: Flow rate required gpm : Flow rate required cu.m/h : Water Temperature Required deg C : Air temperature around pool deg C ...Since there are 7.5 gallons in each cubic foot, multiply the cubic feet of the pool by 7.5 to arrive at the volume of the pool (expressed in gallons). Measure the length, width, and average depth of the pool, rounding each measurement off to the nearest foot or percentage of one foot. One inch equals 0.0833 feet.How to Use a Pool Vacuum. Visit HowStuffWorks.com to learn more about how to use a pool vacuum. Advertisement Using a pool vacuum makes the task of cleaning the floor of the pool e...To be honest, sizing the pump is actually pretty straightforward. There is a general rule we use that makes it very easy to pick. For round above ground pools up to 24 ft. ( pools with less than 15,300 gallons) use a 1 HP pump. For round above ground pools over 24 ft. (pools with more than 15.300 gallons) use a 1.5 HP pump.Small: A small pool is typically around 12′ x 24′. It’s perfect for a couple or a small family, and it can hold up to 7,000 gallons of water. Medium: A medium-sized pool is around 16′ x 32′. It’s a good choice for families and can hold up to 15,000 gallons of water. Large: A large pool is around 20′ x 40′.a swimming pool? ... To figure out how many gallons of water it takes to fill your pool, use this equation: Length ... Drinking Water, 5-6, 8, 10-11, 14, 21.Aug 16, 2023 · According to official regulations by FINA (World Aquatics), Olympic-size swimming pools are 164 feet long (50 meters), 82 feet wide (25 meters), and 7-10 feet deep. That is over 500,000 gallons of water! Standard Lap Pool Dimensions. Standard lap pools are long and narrow, designed explicitly for people to swim laps. Mar 16, 2024 · Deciphering the right heater size depends on pool dimensions and the desired temperature rise. A pool heater calculator helps streamline this process. To heat the pool effectively, the heater’s output must be powerful enough to raise the water temperature by at least 1 degree, factoring in the pool’s surface area and the ambient temperature.

A 10,000 gallon pool is ideal for medium-sized families. It provides ample space, easy maintenance and other unique benefits. It’s an excellent choice for endless hours of enjoyment and making memories. Provides enough space for swimming and recreational activities. A 10,000 gallon pool is great for swimming and fun activities. Let’s look ...

A 20-by-40-feet pool with an average depth of 5 feet holds 21,600 gallons of water. The same shape pool with an average depth of 6 feet holds 36,000 gallons. A 20-by-40-feet pool w...A typical 20,000 gallon pool is rectangular in shape and measures approximately 30 feet long by 15 feet wide. The exact size will vary depending on the design of your particular pool but it typically runs between 25 and 40 feet in length and 10 and 20 feet in width.Volume equals the surface area multiplied by the average depth of the pool or spa multiplied by 7.5 which is the conversion from cubic feet to gallons. Volume = ... Above ground pool heat pumps range in cost from $1650-$2850, for heaters with energy output of 55-115K BTU. Sizing a heat pump for inground pools is done by first matching pool heater BTU output to pool size in gallons. For pools of up to 20,000 gallons, small heat pumps like the Hayward 95K BTU output are suitable. Step 2. Determine Required Gallons Per Minute (GPM) - After you have the number of gallons in your pool (20,000 gallons for this example), you will have to calculate the GPM required to filter 20,000 gallons in 8 hours. To calculate this flow rate, first, divide your calculated gallons by 8 Gallons Per Hour (GPH).Determine the number of gallons that need to be pumped per hour to clean all your pool’s water in 8 hours. Divide the amount of water in your pool (in gallons) (from the step above) by eight. So, if your pool has 24000 gallons of water, the equation would look as follows: 24000 ÷ 8 = 3,000. Since pumps are categorized by the gallons, they ...The surface area of a swimming pool in feet 2 can be calculated as follows: Circular pools: radius x radius x 3.14. Oval-shaped pools: (0.5 x length) x (0.5 width) x 3.14. Kidney-shaped pools: length x width x 0.75. Rectangular pools: length x width. The required BTU output per hour is calculated as follows:20,000 gallons x 8.3 lbs / gallon = 166,000 lbs of water that needs to be heated. Since it takes one Btu to heat one pound of water by a single degree, we now know that raising this entire 20,000-gallon pool by one degree will require 166,000 Btu of heat energy. If you want to raise the water temperature by 10 degrees, you would need …What is the volume of my pool? Using the formula for ovals, let’s break it down: Oval – Longest Diameter x Shortest Diameter x Average Depth x 6.7. 36 Feet x 18 Feet x 5.5 x 6.7 = 23 878.8 gallons. For the sake of having a nice round number moving forward, we will round the sum product up to 24,000 gallons of water.

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Rectangular or Square Pool Length x Width. Round or Circular Pool 3.14 × Radius 2. Oval Pool 3.14 x Length x Width x 0.25. Kidney-Shaped Pool Measure the widest point in both halves of the kidney shape to get your A and B width measurements. Then plug those measurements into the equation below: (Width A + Width B) x Length x 0.45Determine the volume of your pool. Refer to the chlorine manufacturer and find the ratio of water/chlorine you need to use. You can also consider using 52-104 oz of liquid chlorine (1.5 - 3.1 liters ) per 10,000 gallons of water (38 cubic meters). The equivalent ratio is 8.15 liters per 100 cubic meters.Step 2: Divide the Pool’s Surface Area by 3. The pool’s surface area divided by three gives you the minimal BTU size recommended for that particular surface area. Continuing the example above with the 15 x 30 …Question: How much sodium thiosulfate do I use to lower my chlorine level that is at 10 of my 35000-gallon pool? Answer: To bring the chlorine reading from 10ppm to 4pmm add 1.31 pounds of sodium thiosulfate to 35,000 gallons of water. Question: I have a 30,000-gallon pool. The T/A is 120, and the pH is 8.0.Advertisement The combination of all of the versions of all of the genes in a species is called the gene pool of the species. Because the DNA of a fruit fly is understood very well...Lap pools – An inground lap pool costs $40,000 to $70,000 on average, depending on the size and material. Traditional lap pools are rectangular, 6 to 9 feet deep, and are used to exercise and improve swimming skills. Small / mini pools – Small inground pools cost $7,000 to $25,000, depending on the size, and are also called plunge pools or ...To find the number of BTUs needed to heat a pool to 80 degrees Fahrenheit on a typical 70-degree day, you should multiply your pool's number of gallons by four. So, a 15,000-gallon pool will need a pool heater size that can accommodate at least 60,000 BTUs to heat it during a 70-degree day because 15,000 x 4 = 60,000. Minimum BTUs …To keep your 24000-gallon pool clean and safe, you will need a pool pump that can circulate all the water in your pool within 8 hours. Experts recommend a pump with a flow rate of at least 50 gallons per minute (GPM) and a horsepower of 1.5 or 2. ….

Pool Size. 12’ 15’ 18’ 20’ 21’ 24’ 28’ 30’. 11’ x 18’ 12’ x 24’ 15’ x 25’ 15’ x 27’ 15’ x 30’ 16’ x 32’ 18’ x 33’ 21’ x 38’ 21’ x 41’. 36” 42”. 2,500 4,000 4,600. in-Ground PoolS. 48”. 3,400 …12,000 x 8.35 x (0.0032 – 0.0012) 12,000 x 8.35 x 0.0020 = 200.4 pounds. That means you need to add about 200 pounds of salt to the pool water to bring your salt levels up to 3,200 PPM. Generally, pool salt comes in 40-pound bags, so you’d need 5 bags of salt to get the 200 pounds you need. Teal green pool water: This is a smaller or newer algae bloom. You should double shock your pool and use two pounds of shock for every 10,000 gallons of pool water. Dark green pool water: This algae has had time to grow significantly. You need to triple shock your pool and use three pounds of shock for every 10,000 gallons. Understanding What It Means To Have A 30,000 Gallon Pool. Pools are usually sized in gallons with one gallon equaling four quarts or 0.13367 cubic feet. Having a 30,000-gallon-pool simply means that you would need thirty thousand gallons of water to fill your swimming pool perfectly up to its maximum designed depth when empty – usually about ...Determine the number of gallons that need to be pumped per hour to clean all your pool’s water in 8 hours. Divide the amount of water in your pool (in gallons) (from the step above) by eight. So, if your pool has 24000 gallons of water, the equation would look as follows: 24000 ÷ 8 = 3,000. Since pumps are categorized by the gallons, they ...The general rule of thumb for shocking a pool with bleach is one gallon of 6% bleach per 10, 000 gallons of water. So if you have a standard-sized backyard pool that holds around 20, 000 gallons of water, you’ll need two gallons of bleach. It’s important to measure out the amount accurately using a measuring cup or another precise tool.Step 2: Divide the Pool’s Surface Area by 3. The pool’s surface area divided by three gives you the minimal BTU size recommended for that particular surface area. Continuing the example above with the 15 x 30 …Size and Capacity: This tank is approximately 10 feet tall and wide by 70 feet long and will hold 24,000 gallons when filled to 80 percent capacity. Notes: 30,000-gallon tanks will most commonly be installed at propane bulk storage facilities or at properties that use a significant amount of propane in short time periods. How big is a 10 000 gallon pool, Mar 14, 2022 · Enter your swimming pools size below to see which Pool Heater is right for you! Please note, after putting in your measurements, our pool heater calculator will ask you to put in the current temperature of your pool and the desired temperature. Based that information, the calculator will recommend an amount of hours it will take to heat the ... , Question: How much sodium thiosulfate do I use to lower my chlorine level that is at 10 of my 35000-gallon pool? Answer: To bring the chlorine reading from 10ppm to 4pmm add 1.31 pounds of sodium thiosulfate to 35,000 gallons of water. Question: I have a 30,000-gallon pool. The T/A is 120, and the pH is 8.0., Mar 1, 2024 · The cost to install an inground pool is $35,000 on average and can range from $28,000 to $55,000 and sometimes upwards of $65,000 for special customizations and extra features. An added hot tub ... , On average, a 24-foot-by-52-inch round swimming pools holds slightly less than 14,000 gallons of water. This amount varies, however, depending on the exact dimensions and whether t..., Fill 12' round above ground pool (3,000 gallons) Large above ground pool: $25 – $600: Fill 12' x 24' above ground oval pool (6,000 gallons) Small rectangular inground pool: $25 – $600: Fill 10' x 20' inground pool with 3’ shallow end and a 6’ deep end (6,000 gallons) Large custom inground pool: $80 – $2,000, Water Capacity for Common Pool Sizes (Figures are in Total Gallons) Above Ground PoolS AverAGe dePth ShAPe Pool Size 36” 42” 48” 52” round 12’ 2,500 3,400 round 15’ 4,000 4,600 5,000 5,700 round 18’ 7,600 8,200 round 20’ 10,000 10,218 round 21’ 13,500 14,500 round 24’ 17,000 19,000 round 28’ 18,000 20,000 round 30 ..., How big of a sand filter for a 20,000 gallon pool? For a 20,000 gallon pool, a sand filter with around 3 square feet of filter area could be appropriate. What size pool filter for a 12,000 gallon pool? A filter with about 1.8 to 2 square feet of filter area should work for a 12,000 gallon pool., Fill 12' round above ground pool (3,000 gallons) Large above ground pool: $25 – $600: Fill 12' x 24' above ground oval pool (6,000 gallons) Small rectangular inground pool: $25 – $600: Fill 10' x 20' inground pool with 3’ shallow end and a 6’ deep end (6,000 gallons) Large custom inground pool: $80 – $2,000, A: The cost of running a heat pump for a 40000 gallon inground pool depends on several factors, including the size of the heat pump, the local electricity rate, and the desired water temperature. However, on average, you can expect to pay around $5-10 per day to operate a heat pump for a 40000 gallon pool., On average, a 24-foot-by-52-inch round swimming pools holds slightly less than 14,000 gallons of water. This amount varies, however, depending on the exact dimensions and whether t..., It is also beneficial to consider the process of filling up the pool as it will provide an indication of how much water bills could increase with regular use. Luckily, it’s actually quite easy and straightforward to calculate how long it takes for a …, May 9, 2024 · The pool calculator shows the volume of water needed to fill up the pool. In our case, it's 22,441.57 US gallons. Our tool is sometimes called the pool size calculator or pool gallon calculator because it works with any unit, not just with metric units. , How big does a cartridge pool filter need to be? Most inground and above ground pools have 4 or 5 sizes, depending on the flow rate or GPH (Gallon Per Hour) level that the pool pump puts out. The rule of thumb for a cartridge pool filter is that you need to acquire 100 square feet of filter per 10,000 gallons of water., Mar 14, 2022 · Enter your swimming pools size below to see which Pool Heater is right for you! Please note, after putting in your measurements, our pool heater calculator will ask you to put in the current temperature of your pool and the desired temperature. Based that information, the calculator will recommend an amount of hours it will take to heat the ... , – Rectangular Pool: A 10,000 gallon rectangular pool might measure around 20 feet in length, 10 feet in width, and have an average depth of 4.5 feet. – Oval Pool: An oval-shaped pool with a capacity of 10,000 gallons could have dimensions of approximately 32 feet in length, 16 feet in width, and an average depth of 4.5 feet. , Pool Size: US Gallons: 12 ft x 24 ft: 10,800: 14 ft x 28 ft: 14,700: 15 ft x 30 ft: 16,875: 16 ft x 32 ft: 19,200: 16 ft x 34 ft: 20,400: 16 ft x 36 ft: 21,600: 18 ft x 36 ft: 24,300: 20 ft x 40 ft: …, For example, if your swimming pool is 10,000 gallons then you should purchase a heat pump with a minimum of 40,000 BTU's. Size at 5 BTU's per gallon of water - ..., If your pool volume is 15,000 gallons, then one turnover would be equal to 15,000 gallons. This turnover is required every 12 hours, or twice a day. ... Oversizing pumps have become such an issue that the State of California (a big pool state), recently enacted a law to control how big of a pump could be placed in a swimming pool. While …, Pentair QUAD 60 60 sq.ft. up to 32,400 gallon pool. Pentair QUAD 80 with 80 sq.ft. up to 43,200 gallon pool; Pentair QUAD 100 with 100 sq.ft. up to 54,000 gallon pool. Quad D.E. filter provides the finest filtration available. ... How Big Of A Filter Do I Need For An Oval Pool. For oval pools, change the multiplier from 7.5 to 5.9. ..., For a 20000 gallon pool, the recommended amount of chlorine is 48 ounces per week. To maintain optimal chemical levels for swimming, 8 ounces should be added per 10,000 gallons every other day or 8-12 ppm free chlorine depending on your preference. ... How Big Is A 30 000 Gallon Pool. Enhance your pool experience with high-quality and ..., Having a clear understanding of your pool’s volume in gallons is crucial for proper maintenance and chemical dosing. It allows you to determine the right amount of chemicals needed..., The Bucket Head wet/dry vac attaches directly to a standard 5-gallon plastic bucket to make an inexpensive shop vac for your home or garage. Expert Advice On Improving Your Home Vi..., Pool Volume(Gallons) Heat Output(BTU) 10,000: 50,000 BTU: 15,000: 90,000 BTU: 20,000: 120,000 BTU: ... As with all pool heaters, if you go big, you’re golden. A smaller pool heater pump size won’t necessarily be detrimental, but you’ll have to run it longer and may have problems keeping the pool warm., Determine the volume of your pool. Refer to the chlorine manufacturer and find the ratio of water/chlorine you need to use. You can also consider using 52-104 oz …, Small: A small pool is typically around 12′ x 24′. It’s perfect for a couple or a small family, and it can hold up to 7,000 gallons of water. Medium: A medium-sized pool is around 16′ x 32′. It’s a good choice for families and can hold up to 15,000 gallons of water. Large: A large pool is around 20′ x 40′., Deciphering the right heater size depends on pool dimensions and the desired temperature rise. A pool heater calculator helps streamline this process. To heat the pool effectively, the heater’s output must be powerful enough to raise the water temperature by at least 1 degree, factoring in the pool’s surface area and the ambient temperature., Thanks to year-round sunny skies, most Orlando hotels have pools where you can cool off after (or in lieu of) your Florida adventures. Before choosing your hotel, check out these t..., Pool Size. 12’ 15’ 18’ 20’ 21’ 24’ 28’ 30’. 11’ x 18’ 12’ x 24’ 15’ x 25’ 15’ x 27’ 15’ x 30’ 16’ x 32’ 18’ x 33’ 21’ x 38’ 21’ x 41’. 36” 42”. 2,500 4,000 4,600. in-Ground PoolS. 48”. 3,400 …, Step 4: Panel Size: 4' x 8' 4' x 10' 4' x 12' 4' x 14' 4' x 15' 4' x 16'. Select your preferred panel size. Step 5: Established Desired Swimming Season. See chart below. Florida Residents - Using the chart to the right, find your location, then choose the corresponding factor number., According to official regulations by FINA (World Aquatics), Olympic-size swimming pools are 164 feet long (50 meters), 82 feet wide (25 meters), and 7-10 feet …, You use the following formula. Pool gallonage x 2 (the recommended number of cycles in a day) ÷ daily hourly run time ÷ 60 (minutes in an hour). So, for a 30,000-gallon pool that runs continuously (24-hours), the formula is: 30,000 x 2 ÷ 24 ÷ 60 = 41.6 or rounded up it’s a 42 GPM minimum flow rate., Hi Joe, a normal shock is 1 lb per 10,000 gallons, so for your pool about 1/10 of a pound – but in the presence of algae or colored or cloudy water, a 3x or 4x shock dosage is not unusual. If your water is clear, I would use 1/4 cup, or 4 oz of shock (1/4 bag). If there is algae or cloudy water, use 1/2 cup or 1/2 bag, or more if needed., According to industry standards, a rule of thumb is that you’ll require approximately one BTU per gallon of water. In this case, a 25, 000-gallon pool would require about 25, 000 BTUs. “It’s essential for homeowners to select an appropriately sized heater based on their need”. When considering which type of heating system you will use ...