First let me say that I am a newer pool owner and am learning this as I go along. I have had services managing my pool and for one reason or another have been through several and am trying to get things adjusted to my liking. The current company has been managing for a few months. They took over after I had a huge algae bloom with the last company and they have had extreme difficulty getting things where they need to be. The algae appears to be gone and the water is perfectly clear. The problem is that I am concerned because it seems that each Friday when they come to clean the chlorine level is back to zero. Additionally since a little before the algae bloom out of nowhere I seem to have brown stains on the pool finish. I know that abalone shell that was not properly cleaned can cause this, but I find it suspicious that if formed around the same time and I am hoping that when I get things corrected properly it will get back in line. I am posting the following results taken with my K-2006 kit. Any help on where to go would be greatly appreciated.
Saturday Monday Tuesday Wednesday
Free Chlorine 18 7 4 3
CYA 80 80 80 80
pH 7.6 7.8 7.8 7.8
TA 70 70 70 70
Calcium Hardness 140 160 140 150
At this rate Friday will be at zero or close. I don't believe this is normal. Additionally, do you think that they believe when the chemicals are being added that they believe are shocking/SLAMing the pool however due to the high CYA levels they aren't getting the chlorine high enough per the TFP Chlorine/CYA chart? Do I need to be draining a portion of the water? Any help would be greatly appreciated. Thanks in advance for your help.
Saturday Monday Tuesday Wednesday
Free Chlorine 18 7 4 3
CYA 80 80 80 80
pH 7.6 7.8 7.8 7.8
TA 70 70 70 70
Calcium Hardness 140 160 140 150
At this rate Friday will be at zero or close. I don't believe this is normal. Additionally, do you think that they believe when the chemicals are being added that they believe are shocking/SLAMing the pool however due to the high CYA levels they aren't getting the chlorine high enough per the TFP Chlorine/CYA chart? Do I need to be draining a portion of the water? Any help would be greatly appreciated. Thanks in advance for your help.
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