Okay, I'm back on here with still more problems After draining my 32,000 gallon pool down to a foot in the shallow end TWICE in August I have just refilled again this week and have tested the CYA to find that it is still 200 according to the K-2006 test kit. Needless to say I am sick about the numbers!!!! There is no way I can drain again before summer is completely over here in the north. I am wondering if the CYA dissipates over the winter?
Also, after having drained and refilled once, FC reading of 9 and closing the automatic cover for only 1 day because of cold and rainy weather I opened it up to find that it was yellow/green and very cloudy. UGH!!! (I would typically use another harsher word) Why would covering the pool cause it to turn bad? Could there be algae on the back of the cover? Why does it turn every time I close it a day? We run the variable speed pump on low setting all the time. I don't feel comfortable leaving it open when we are not home because there is no fence around it (rural home). I have now drained it again for the second time and refilled using our well water. After refilling it is still yellow/green and cloudy with a CYA of 200 (I got a reading from using half tap and half pool water for the test).
I am currently shocking and realize that I will need a high level of chlorine due to the still high CYA level and to keep it high. How high should I keep the chlorine and for how long? How long before I should see it clearing? I have been reading and they said that it should turn grey after the algae dies. How long before I should see that? Should I keep using bleach? The bottle of bleach says 8.25% Sodium Hypochlorite what is in the other 91.75%? My husband accidentally bought and dumped the splash-less bleach in the pool - does this have any CYA? I can't believe how high it still is after 2 drains! I am baffled!
One more question (sorry about all of them) - Does any one know if a UV light system works? I stopped at another pool store in a different town and they said with the light cleaning system that it doesn't take as much chlorine to keep the pool clean. We were thinking of having one installed. ?? This store also said the the SWG systems are corrosive to metal and the it wouldn't be good for the auto cover parts.
My readings are:
FC - 20
CC - 1
PH - 7.4
TA - 350
CH - 200
Also, after having drained and refilled once, FC reading of 9 and closing the automatic cover for only 1 day because of cold and rainy weather I opened it up to find that it was yellow/green and very cloudy. UGH!!! (I would typically use another harsher word) Why would covering the pool cause it to turn bad? Could there be algae on the back of the cover? Why does it turn every time I close it a day? We run the variable speed pump on low setting all the time. I don't feel comfortable leaving it open when we are not home because there is no fence around it (rural home). I have now drained it again for the second time and refilled using our well water. After refilling it is still yellow/green and cloudy with a CYA of 200 (I got a reading from using half tap and half pool water for the test).
I am currently shocking and realize that I will need a high level of chlorine due to the still high CYA level and to keep it high. How high should I keep the chlorine and for how long? How long before I should see it clearing? I have been reading and they said that it should turn grey after the algae dies. How long before I should see that? Should I keep using bleach? The bottle of bleach says 8.25% Sodium Hypochlorite what is in the other 91.75%? My husband accidentally bought and dumped the splash-less bleach in the pool - does this have any CYA? I can't believe how high it still is after 2 drains! I am baffled!
One more question (sorry about all of them) - Does any one know if a UV light system works? I stopped at another pool store in a different town and they said with the light cleaning system that it doesn't take as much chlorine to keep the pool clean. We were thinking of having one installed. ?? This store also said the the SWG systems are corrosive to metal and the it wouldn't be good for the auto cover parts.
My readings are:
FC - 20
CC - 1
PH - 7.4
TA - 350
CH - 200