Hey everyone. 2nd year pool owner here. We just had to drain our 30k gallon plaster pool to get the waterline tile replaced. Upon filling it, I’ve been working to get chlorine levels in check and have finally accomplished that with liquid chlorine and tricolor tabs in the strainer.
However, everything else is pretty off kilter. Where should I start here? Thanks for the help.
FC 4.8
pH 7.0 (been low for a few weeks)
TA 120 (been high for a few weeks)
CH 390
CYA 0 (can’t get anything to register)
Temp 61.8
CSI -0.47
However, everything else is pretty off kilter. Where should I start here? Thanks for the help.
FC 4.8
pH 7.0 (been low for a few weeks)
TA 120 (been high for a few weeks)
CH 390
CYA 0 (can’t get anything to register)
Temp 61.8
CSI -0.47
First thing I would do is pull the tabs. They are acidic and should never be in the skimmer, but instead a floater. But you don't need that acidic chemical which is causing the pH to go down. Instead, use granular stabilizer (via the sock soaking method) to increase your CYA. For now, increase the CYA with stabilizer to about 30 ppm. The 
