CYA

[jlockw]

I have a low CYA reading, so how much conditioner would I add ?

15000ga irregular shape pool with spa
pantair intelliflo 4 variable speed pump
pentair ic 40 swg
pentair quad de filter

Just done @ Leslie's pools today

FAC 2
TAC 2
PH 7.9
TA 85
CH 400
CYA 30 ( I guess this should be 60-100 ? )
Phosphates 1.5
salt 3800

 

[JasonLion]

A good CYA level for use with a SWG is between 70 and 80. Because it is fairly easy to raise CYA, but very difficult to lower CYA, it is best to raise your CYA level is several steps. Therefore, it is best to raise CYA to perhaps 60 right now, wait for that to dissolve, test the water and then make the final adjustment based on that.

To find out how much stabilizer/conditioner to add to raise the CYA level to 60 you can use my pool calculator, see the link in my signature. Enter the number of gallons in your pool, your current CYA level and a target level of 60 and it will tell you how much CYA to add.