Note: It is crucial that you don’t round your answers too early! If you round the calculated values for surface area and then volume to the nearest whole numbers, you will calculate an answer that is slightly too big or small. We can therefore calculate the capacity in US gallons by multiplying the volume by 7.48: $$Volume = Surface\,Area × Depth = 471.239\,ft^2 × 10\,ft = 4712.39\,ft^3$$įinally, to convert this into US gallons, recall that one cubic foot of water is equivalent to 7.48 US gallons. $$Volume = Surface\,Area × Average\,Depth$$ The current Combined Chlorine reading is (0 to 99.$$Volume = Surface\,Area × Depth$$ Rectangular Pool with Variable Depthįor a rectangular swimming pool with variable depth the surface area is calculated using the formula: We recommend shocking with either Calcium Hypochlorite (granular only, not tablets) or with Liquid Chlorine (Sodium Hypochlorite). You will need to know the Combined Chlorine reading in PPM before you can use the Shock Calculator. I need to use Sodium Thiosulfate to correct the water Total Chlorine level. I want the Total Chlorine reading to be (0 to 99.9) The current Total Chlorine reading is (0 to 99.9) One way is to add Sodium Thiosulfate to neutralize the excess chlorine. Sometimes it becomes necessary to quickly reduce the level of chlorine in your water source, pool or spa, though time will do it for you. (tablets, pucks or sticks) any brand that is similar Heat and oil are the main reasons for difference.Ĭhlorine (Sodium Hypochlorite) any brand that is similar You should keep your water source's (except for a spa) Free Available Chlorine (FAC) level between 1.0 and 3.0 parts per million (PPM) while your spa's FAC level should be generally higher, between 2.0 and 5.0 PPM. I need to use Cyanuric Acid (Stabilizer) to correct the water CYA level. I want the Cyanuric Acid level to be (0 to 999) The current Cyanuric Acid level is (0 to 999) It isn't necessary to add Cyanuric Acid to an indoor pool or spa. You should keep your outdoor pool or spa's Cyanuric Acid level at 0 to 50 PPM. I need to use Hardness Increaser (Calcium Chloride Flake) to correct the Calcium Hardness of the water. I want the Calcium Hardness to be (0 to 9,999) The water current Calcium Hardness is (0 to 9,999) You should keep your pool or spa's Calcium Hardness at 150 to 250 PPM. I need to use Alkalinity Increaser (Sodium Bicarbonate) to correct the Total Alkalinity of the water. I want the Total Alkalinity to be (0 to 9,999) The current Total Alkalinity is (0 to 9,999) The volume of water is (1 to 9,999,999 gallons) You should keep your pool or spa's Total Alkalinity at 60 to 180 PPM. The range for Total Chlorine and Free Available Chlorine is 0 to 99.9 PPM. The range for Alkalinity and Calcium Hardness is 0 to 9,999 while the range for Cyanuric Acid is 0 to 999 PPM. The data entry range is the workable range for all values the range for Volume (quantity) Of Water is 1 to 9,999,999 gallons. In these calculators, the abbreviation PPM is for parts per million. After doing one calculation, you may go to another or you may click on Clear Values and do another calculation on the same one. Each calculator is independent of the others. For further information, please contact a water chemical expert. When in doubt, add less chemical than called for and re-test before adding more. We are not responsible for any chemicals you add to your water source (pool, spa, fountain, waterfall, pond or other water location), or for any liability resulting from following the suggestions made on this web page. This is at best a close approximation based on data you supply. As a caveat, all chemical recommendations are for water sources under normal conditions. Based on your data entry, The Pool Chemical Conditions Calculator will give you the approximate amount of chemical to add for the selected adjustment. Simply enter the correct information about your water source at each prompt and let the calculator do the work! All you need to know before you get started is your water source's volume in gallons, what type of chlorine you are currently using (liquid, cal hypo, dichlor, etc.) and your water source's current reading for the variable you're trying to adjust. The Pool Chemical Conditions Calculator is designed to help you by automatically computing the correct amount of chemical you'll need to adjust your water source's water. The terms pool and spa are specific in chlorination. Throughout this set of calculators, the generic term water source is meant to include or mean any water source with re-circulating water within. This calculator is designed to help you determine the chemical condition and make suggestions concerning the re-circulating water in a pool, spa, pond, fountain or waterfall. This calculator requires the use of Javascript enabled and capable browsers.
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