Just pulled cover off.. green swamp water

[slade8200]

Been away for awhile. Pool is still doing well. Bought some stabilizer and got the cyanuric acid level to 40. pH is steady at 7.5, alkalinity at 80. I notice that I have to add bleach every 3 to 4 days to keep the chlorine level at 1-4 ppm, is this normal? Also, with that kit, what size of spoonful are you supposed to use for the R-0870? The video they have shows a huge heaping spoonful, but I have just been filling the little scoop to the top and nothing more.

[Watermom]

Being able to go 3 to 4 days is pretty good except that with CYA of 40 your chlorine needs to be kept at 3-6 all the time so yours is getting too low. PH and alk are both fine.

You only need enough powder to turn the water pink. If one scoop does it, don't bother adding the second one. Don't waste it.

[slade8200]

Should I increase my cyanuric acid level, and if so, to what amount?

[aylad]

You CAN bump it up a little, maybe to 50 or so, but keep in mind that if you do, you're going to have to be diligent about keeping your chlorine level above 3 ppm, and closer to the 6 ppm mark.

[slade8200]

If my stabilizer level was at 50, why is it important to not let the chlorine get below 3?

[Watermom]

Chlorine levels are based on CYA levels. If you haven't already done so, please take a look at the Best Guess Table in my signature below. If you drop below the necessary chlorine range, you risk an algae bloom.

[slade8200]

I looked at that before but didn't see why the ranges changed like they do. I guess algae is the answer. Does the cyanuric acid level decrease slowly with time?