Hey guys. I know CH is recommended to be 350-400 with an SWG and I'm wondering what the affect of having a lower CH is with an SWG. Here's the deal:
Woke up this morning and the new SWG (installed earlier this week) is reading high salt. So I'm off to drain. My CH is at 375, but I will say I have been fighting a few scale spots...so I presume that number might be high for my particular pool. Since I need to drain about 15% of the pool to bring the salt down...I have started the drain. To bring my CH down to 350, I need to only drain 6%. I know I can add CH to the pool...but since I'm having scaling issues...what affect does a low CH have on an IGP pool with an SWG?
Not once has the CSI been above .6...and this scale issue is my nemesis...so would having a lower CH be better...or would I risk some type of long-term damage to the plaster (which I definitely don't want)?