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TY... will keep an eye on it.

Drained and refilled pool. added 64 Oz, stabilizer (dry) which should bring CYA to 32 in 15K pool. Ran pump for 2 days. CYA reads low to mid 20's??? CH 350, TA 90 PH 7.5 FC 6. Was planning on using pucks to bring CYA up to ~ 40 while I was away, but didn't want to add enough to do that and then...

TY for quick response

Since my CYA level is about 80-90 I have found it easier to maintain my FC at 9-11 to prevent excessive loss due to Las Vegas sun and high temps. I under stand that PH readings can be difficult to read accurately as FC approaches 10 or above. My question is... are PH readings at this FC level...

Only downside that I have seen is that I need more R-0870 in order to check FC levels accurately. It seems easier to control FC with the wider band between Min-Target FC afforded by a higher CYA level.

I have noticed a large difference between recommended CYA levels for liquid chlorine vs SWG pools. Living in Las Vegas with a high UV Index, I have found it difficult to maintain chlorine levels with CYA at 40-50 due to large daily swings. I seem to have found what I consider a sweet spot with...

Draining for both repairs and chemistry. Had a pool service till midsummer that was using pucks, but had 2 algae blooms in 3 weeks with them while FC was 4 all month so I let them go. Slammed and it has been ok since. Also been doing most of my own repairs ( replaced pump and repaired leaking...

K...tyvm

Not slamming right now, but having just switched to TFP this summer my CYA is 80-90. Following chart, Min FC is 6-7 and target is 9-12 putting my FC over 10 at times. I was just wondering if a digital PH meter would read PH correctly even with FC over 10. Need repairs to decking and lights this...

I have read that when FC is over 10 ( correcting for high CYA or slamming) that PH readings will be incorrect. Since the PH appears to be higher than it actually is when tested, I am assuming that the high FC is skewing the PH when chemically tested. Would a digital PH meter show the correct PH...

I have found that my speedstir vial has both a 10ml and a 11.5ml line and that when filled to the 10ml line and then inserting the magnetic stick it will go up to the 11.5ml line. So now I can just leave the magnetic stick in and fill to the 11.5ml line to have a 10ml water sample.