Hello, this is my very first post. I can't believe I haven't discovered you all before now. I am thanking you in advance.
My cool is very clear in the shallow end (3'), but very slightly not sparkly in the deep end (8'). A couple things going on: my Cyanuric acid level is now above 160, very small amount of what I think is yellow algae over the last few days. When I noticed it (very subtle) 4 days ago I brought down ph from 7.9 to 7.5 and alkalinity dropped from 110 to 103, raised chlorine to about 6ppm, added 19oz Bio Guard banish and have been vacuuming 1-2 times a day (even if no visible algae). I opted for conservative treatment bc it is very little visible algae, still appealing to swim, it's 95 degrees and our season is in total about 8 weeks! So did not want to super chlorinate it unless it really started to go badly. I know that is not the optimal strategy but I was trying to keep it so we could swim in this crazy hot weather. I did not realize until this week that CYA as high as it is is not good and likely contributed to the algae growth. I want to switch to liquid chlorine but not sure how to go about that (amounts?) and if I am seeing 4-5 very small spots of what I think is mustard algae but the pool water does not have a hint of discoloration, what should I do at this point and do you think it is unsafe for swimming? There was no visible algae all day after vacuuming yesterday morning and into the evening but saw a few spots this morning. This is the 12th year with this pool and last year in July was the first time I had any algae trouble (and I was not an algaecide user, just tried to keep things balanced and chlorine level ok- not crazy high but enough - or what I thought was enough). Thanks if you can help. Really wondering about the safety issue. Of course, if it looked horrible I would super chlorinate it - liquid chlorine was the only thing that worked last year - then it had that yellow tinge- not seeing that right now. Thanks.
My cool is very clear in the shallow end (3'), but very slightly not sparkly in the deep end (8'). A couple things going on: my Cyanuric acid level is now above 160, very small amount of what I think is yellow algae over the last few days. When I noticed it (very subtle) 4 days ago I brought down ph from 7.9 to 7.5 and alkalinity dropped from 110 to 103, raised chlorine to about 6ppm, added 19oz Bio Guard banish and have been vacuuming 1-2 times a day (even if no visible algae). I opted for conservative treatment bc it is very little visible algae, still appealing to swim, it's 95 degrees and our season is in total about 8 weeks! So did not want to super chlorinate it unless it really started to go badly. I know that is not the optimal strategy but I was trying to keep it so we could swim in this crazy hot weather. I did not realize until this week that CYA as high as it is is not good and likely contributed to the algae growth. I want to switch to liquid chlorine but not sure how to go about that (amounts?) and if I am seeing 4-5 very small spots of what I think is mustard algae but the pool water does not have a hint of discoloration, what should I do at this point and do you think it is unsafe for swimming? There was no visible algae all day after vacuuming yesterday morning and into the evening but saw a few spots this morning. This is the 12th year with this pool and last year in July was the first time I had any algae trouble (and I was not an algaecide user, just tried to keep things balanced and chlorine level ok- not crazy high but enough - or what I thought was enough). Thanks if you can help. Really wondering about the safety issue. Of course, if it looked horrible I would super chlorinate it - liquid chlorine was the only thing that worked last year - then it had that yellow tinge- not seeing that right now. Thanks.
