waterbear said:What are you chlorinating with? If you are using trichlor or dichlor then your TA is too low, bring it up to about 100-120 ppm.
If you are using bleach, liquid chlorine, cal hypo, or lithium hypo then your TA is perfect but you shoulod bring up your calcium hardness to about 300 ppm.
I'm in a similar situation. My new pool was built three weeks ago, and my ph can jump from 7.6 to 8.0 overnight. My CH is around 200 presently... and I've kept it there because my CSI would be much higher if my CH was around 300 during one of these jumps.
Is my logic faulty? Even if my ph frequently jumps and my CSI would be higher, should I still have a CH of around 300? Or should I wait until my ph is more stable before raising CH further?