I have a very close friend who has been having a lot of trouble for a while with his pool (especially algae), so I had him bring me a water sample. These are the results by using a Taylor K2006 test kit and a copper test kit. The pool is an inground 16x32 vinyl liner with a Hayward EC65A filter.
PH - Unreadable. Sample was bright yellow, well below 7.0. Took 57 drops of R-0006 base demand to bring up to 7.4 Surprised algae could survive at that low PH.
Chorine - 4.0ppm
CYA - 90ppm
Alkalinity - Unreadable. Sample turned red immediately after adding R0007. No amount of R-0008 indicator would change the sample to green
Calcium - 120ppm
Copper 0.4ppm (from algecide)
Since it is an acid, is it possible that the CYA has driven the PH so low?
He's been dumping a lot of shock in. Could that drive PH down?
According to the Taylor charts (I had to extrapolate for 57 drops of base demand), he would need to add 30 Lbs of sodium carbonate to bring PH up to 7.4. Should he actually add 30 Lbs? If so, I assume gradually over a week?
He uses chlorine tabs and shock powder to treat the pool. He said he took a sample to a pool store and they sold him the chemicals he needed. Imagine his surprise when I told him their main purpose is to sell pool chemicals.
Any advice here would be appreciated. I'm guessing he's going to have to dump some water.
PH - Unreadable. Sample was bright yellow, well below 7.0. Took 57 drops of R-0006 base demand to bring up to 7.4 Surprised algae could survive at that low PH.
Chorine - 4.0ppm
CYA - 90ppm
Alkalinity - Unreadable. Sample turned red immediately after adding R0007. No amount of R-0008 indicator would change the sample to green
Calcium - 120ppm
Copper 0.4ppm (from algecide)
Since it is an acid, is it possible that the CYA has driven the PH so low?
He's been dumping a lot of shock in. Could that drive PH down?
According to the Taylor charts (I had to extrapolate for 57 drops of base demand), he would need to add 30 Lbs of sodium carbonate to bring PH up to 7.4. Should he actually add 30 Lbs? If so, I assume gradually over a week?
He uses chlorine tabs and shock powder to treat the pool. He said he took a sample to a pool store and they sold him the chemicals he needed. Imagine his surprise when I told him their main purpose is to sell pool chemicals.
Any advice here would be appreciated. I'm guessing he's going to have to dump some water.