Now Entering Day Two

dlaslo · Jun 19, 2015

Richard320 said:
Is the label blue or green? They sell both - same price - green label is 1/2 strength.

Jasco Green

Now I see on their web site it is only 20%

dlaslo · Jun 23, 2015

It's been three weeks following your advice (TFP) and all seems well. The water is crystal clear and the chemistry is stable. I have yet to measure FC loss overnight (with long June nights - always something going on). And I should.....my one concern is the clorox consumption.....I am putting in typically 50-90 oz / day in a 14,000 gal pool in the sun most of the day.

I'm still in the 30's with CYA. TA is 110 pH crept up once but usually is 7.4

pabeader · Jun 23, 2015

Someone will be along soon. I bet they suggest bumping up the CYA a bit to help hold the FC.

pooldv · Jun 23, 2015

How many ppm is that? Is it more than 3 or 4? It is definitely OK to raise CYA up to 50 to help reduce chlorine loss during the day. Good job getting your pool under control! :goodjob:

dlaslo · Jun 23, 2015

I measure in the mornings and it is usually FC=3-4 ppm and the I adjust to the recommended value of 6 ppm at 38 CYA -- we use the pool almost every day.....(2 adults) for maybe 1-2 hours - so I lose maybe half of the FC each day

pooldv · Jun 25, 2015

Loss, of 2-3 ppm is pretty normal.

dlaslo · Jun 25, 2015

pooldv said:
Loss, of 2-3 ppm is pretty normal.

I just did my first overnight FC loss and it went from 5 to 4 ppm. It is conservative - I didn't get the dawn/dusk samples at dark and I had about 90 minutes of daylight contributing to the 1 ppm loss.

Strangely, my pH dropped from 7.4 to 7.2 overnight.

When a couple of folks suggested (above) increasing my CYA to 50 ppm, I decided to use some of my pucks I put on the shelf. But they have barely dissolved and I doubt if that is the reason.