so this evening, FC 5, CC 0, PH is 7.8, TA is 110, CH is 375, CYA 45.
CSI at those levels is 0.49.
If I bring down PH to 7.4 and other levels remain the same, CSI would be 0.09.
Is it okay to let the CH remain that high? If it continues to rise or needs to be lowered, is replacing water...