We did just that. I bought a small above ground pool for the kids last summer (15' diameter) and our yard wasn't level. Digging in the red clay proved impossible so we decided that instead of trying to lower the high end we'd raise the low end with sand. We bought mortar sand, not play sand, and spread it in the area that needed to be raised. Once you add water to the sand it stays in place very well. So well, in fact, that even after the pool was taken down the sand still stayed in place for months. The pool held up the entire summer but the cost of the sand was about as much as I spent on the pool (about $200).
It depends on what you mean by low. You need to check your filter's manual, and see what level it SHOULD be. Lower than that, usually means you are losing sand into the pool (you'll know!) or when you backwash (because the pump is too big for the filter.) If you are losing sand, you need to correct the cause and then add more sand, after you've resolved the problem.
make sure chlorine is is at 1-3ppm, if pH is very low raise chlorine slightly higer than average. shock the pool after and run filter for over night. If pool still not stabilize then add PH high chemical.
If the pool is too acidic, pH is low, add soda ash (sodium carbonate). If it is too alkaline, pH is high, add muriatic acid.
You will want to lay the sand out at 17' x 44' x 3". Give yourself an extra 1ft of wiggle room minimal per side. That puts us just under 7 cu yards of sand. Call it 9.5 tonnes of sand or 7.5 yards. Use any extra to fill in low spots.
Check if you have any stabilizer in your pool without stabilizes (cyanuric acid) the chlorine use is greatly increased.
You would be safest using Baquacil pH Increaser, which is a high purity, highly active dry alkaline product used to raise pool pH. In non-Baquacil pool water, both Soda Ash and Hydrochloric acid are used to raise pH levels. Pool shops are a good place to seek advice also.
The answer is largely dependent on the total alkalinity (T/A). High T/A requires more soda ash to raise pH a given amount as opposed to a low pH.
sand have low specific heat capacity.
You can raise the alkaline level if your pool water by adding sodium bicarbonate (aka baking soda). It is recommended that you raise the alkaline in small increments because it is easier to raise your total alkaline levels slightly if its a little too high or too low. This chart from swimming-pool-care.com gives out how much sodium bicarbonate to add.Desired increase in PPM1,000 gallons5,000 gallons10,000 gallons20,000 gallons50,000 gallons100,000 gallons10 ppm2.24oz11.2oz1.40lbs2.80lbs7.00lbs14.00lbs20 ppm4.48oz1.402.80lbs5.60lbs14.0lbs28lbs30 ppm6.72oz2.10lbs4.20lbs8.41lbs21lbs42lbs40 ppm8.97oz2.80lbs5.60lbs11.2lbs28lbs56lbs50 ppm11.2 oz3.50lbs7lbs14lbs35lbs70lbs60 ppm13.4 oz4.20lbs8.41lbs16.8lbs42lbs84.1lbs
you have to raise the car up. its underneath the ac compressor it shelf
On Morris Island, a low, flat sand bank off the south side of the entrance to the harbor of Charleston, SC.
Adding chlorine and algae-side during the winter will make it a lot easier to get the pool water ready in the summer. It is also safer to have clear water in the pool at all times in case of unforeseen emergency's.