Here is the situation.
My chemicals are perfect, pool is crystal clean. The psi on the filter would read 17, but rise quickly to 25, within a day. I back washed the filter and it would drop back to 17. I was not aware that you had to add de each time you back washed. The previous home owner told me he added 4 coffee cans of DE filter aid, and that was sufficient. Troubled by the rise in pressure, I took apart the grids on the filter, and cleaned them. I discovered the grids were 30" high and 20" wide. I did some research and found the filter by those measurements should be a 60ft2 filter. Based on that I added 7 1/2 pounds of DE, not the 4 scoops the previous owner had done. When I say I added 7 1/2 pounds..the box stated 3 cups equals a half pound. So I added just over 42 cups (6 cups equal 1 pound). This was way more than the previous home owner did...with this calculation, he added about 2 pounds.
So here is my issue, and sorry for the long story. Every thing appears fine, but the PSI reads 23. The next day 24, and today 25. Did I add to much DE? Is the filter measurements correct on my part (60ft2). Why is the pressure rising?
Pool : 20,000 gallons
Pump: Hayward super II pump 1 1/2 hp
Filter: Hayward DE (60ft2 ???)
2 returns (jets) 1 collection skimmer( water just slightly above middle of skimmer)
Gunite pool with vinyl liner, 8ft deep end, 3ft shallow.
Thanks guys,
My chemicals are perfect, pool is crystal clean. The psi on the filter would read 17, but rise quickly to 25, within a day. I back washed the filter and it would drop back to 17. I was not aware that you had to add de each time you back washed. The previous home owner told me he added 4 coffee cans of DE filter aid, and that was sufficient. Troubled by the rise in pressure, I took apart the grids on the filter, and cleaned them. I discovered the grids were 30" high and 20" wide. I did some research and found the filter by those measurements should be a 60ft2 filter. Based on that I added 7 1/2 pounds of DE, not the 4 scoops the previous owner had done. When I say I added 7 1/2 pounds..the box stated 3 cups equals a half pound. So I added just over 42 cups (6 cups equal 1 pound). This was way more than the previous home owner did...with this calculation, he added about 2 pounds.
So here is my issue, and sorry for the long story. Every thing appears fine, but the PSI reads 23. The next day 24, and today 25. Did I add to much DE? Is the filter measurements correct on my part (60ft2). Why is the pressure rising?
Pool : 20,000 gallons
Pump: Hayward super II pump 1 1/2 hp
Filter: Hayward DE (60ft2 ???)
2 returns (jets) 1 collection skimmer( water just slightly above middle of skimmer)
Gunite pool with vinyl liner, 8ft deep end, 3ft shallow.
Thanks guys,