This is not my first rodeo, I found tfp years ago with my first pool and have used SLAM ever since, very successfully.
Last year we didnt open the pool (11800g inground vinyl pool running IC15 SWG and pentair clean and clear 150 filter cartridge, with new filters 2020) as my husband had a bone marrow transplant. It stayed covered. This year we came back to reopen, knowing we might take a day or two longer than the typical 2.5 days to SLAM to perfectly clear water. That was two weeks ago!!! We seemed to be making good progress for a few days then seem to have hit a brick wall. I believe our problem hit on day 2 when I decided to vacuum to waste, bc our little dolphin dx3 power supply fizzled. Husband refilled the pool from well (mistake, I have never done that), it was maybe 2 inches of water.
I had measured cya being at about 80, and so kept the chlorine at the appropriate level for that (31) Pool store later measures cya at 38, I dont think we added even close to enough water to bring it down that much. Several days of rain later, I am measuring cya at about 45, and keeping the shock levels appropriate for slam by tfp poolmath.
Pool store measured iron at .2ppm. I wonder if at the very high chlorine levels that level of iron could cause a slightly brown cloudiness?Note, the white stairs were badly stained brown. Tested with vitamin c tablet and immediately cleared the stain. The walls also seem to have light brown staining and the water is very cloudy. At pool store phosphates measured 441ppb. Pool store said that could be the culprit but from tfp.com I am not sure about that.
After 3 nights of occult free chlorine loss of <=1.0 and cc 0.5 but still cloudy and slightly grey brown water I am backing off the levels for next steps. What ARE my next steps? Focus on the iron?
Using Taylor k2006 test kit.
Last year we didnt open the pool (11800g inground vinyl pool running IC15 SWG and pentair clean and clear 150 filter cartridge, with new filters 2020) as my husband had a bone marrow transplant. It stayed covered. This year we came back to reopen, knowing we might take a day or two longer than the typical 2.5 days to SLAM to perfectly clear water. That was two weeks ago!!! We seemed to be making good progress for a few days then seem to have hit a brick wall. I believe our problem hit on day 2 when I decided to vacuum to waste, bc our little dolphin dx3 power supply fizzled. Husband refilled the pool from well (mistake, I have never done that), it was maybe 2 inches of water.
I had measured cya being at about 80, and so kept the chlorine at the appropriate level for that (31) Pool store later measures cya at 38, I dont think we added even close to enough water to bring it down that much. Several days of rain later, I am measuring cya at about 45, and keeping the shock levels appropriate for slam by tfp poolmath.
Pool store measured iron at .2ppm. I wonder if at the very high chlorine levels that level of iron could cause a slightly brown cloudiness?Note, the white stairs were badly stained brown. Tested with vitamin c tablet and immediately cleared the stain. The walls also seem to have light brown staining and the water is very cloudy. At pool store phosphates measured 441ppb. Pool store said that could be the culprit but from tfp.com I am not sure about that.
After 3 nights of occult free chlorine loss of <=1.0 and cc 0.5 but still cloudy and slightly grey brown water I am backing off the levels for next steps. What ARE my next steps? Focus on the iron?
Using Taylor k2006 test kit.
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