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hi, i have a 21k gallon pool, 60 cya and prone to mustard algae. so based on chart i try to keep my chlorine at about 10ppm. my pool was beautiful and crystal clear until one day i noticed tremendous chlorine loss - over the day i had to put in 18pmm of chlorine so it didnt drop below my...

If chlorine never dips below the recommended minimum (and is even much more than that) is it possible to get algae? because i got significant yellow streaking at the bottom of my pool and i brushed up clouds of yellow this morning and tested 1 CC, but i'm surprised because my chlorine levels...

Will my pool always use the same amount of chlorine per day (barring changes in temperature, bather load and other external factors)? So for example, i typically have seen my pool use about 5-6 ppm of chlorine per day. so it starts at about 10 and falls to about 4.5-5ppm by evening. But when i...

hi all - i'm pretty new to this website and based on help i received last year i am trying liquid chlorine for the first time. so far its a total flop! 1) according to PoolMath one gallon of 12.5% chlorine should add 6ppm of chlorine to my 21k gallon pool. but it does not seem to. i have been...

I'm completely exhausted from battling algae that doesn't seem to go away. normally, if during the season i see some algae, i brush, vacuum and shock and leave the filter running overnight. typically the next morning i wake up to dead algae in grey clusters on the floor of the pool. i then...

My liner is slipping badly and I am replacing it. The pool company is saying it is possibly the result of a very old coping which should be replaced as well. Originally they were recommending that i tear up all the concrete to install new coping. Now they are saying that they can replace the...

my pool was crystal clear for a few days (just got rid of mustard algae using procedures outlined in this forum). this morning the pool was clear to the bottom. i tested FC approx 8.5, CC of .02 or .04. i added 1 bag of calcium hypochlorite 68% shock and went to work (after the nonstop water...

hi, i'm new to this forum. I have mustard algae for years - mostly under control thanks to the clear advice on TFP - yet something i still battle on and off each season. I am currently replacing my liner and some broken pipes. I have 2 questions and wonder if someone can advise: 1) will...