Quote Originally Posted by PoolDoc View Post
Add 3 gallons tonight. Test tomorrow PM with OTO. If you get a DARK yellow OTO reading for chlorine, add 1 gallon the following PM. If you get medium to light yellow, add 2 gallons. Clear, add 3 gallons.
Added some chlorine granules (the last of a bottle we had in the garage) and 3 gallons of bleach last night. Bought the HTH 6-way kit at Walmart and tested this morning:
TC 10+
pH ~7.3 (darker than 7.2, lighter than 7.5)
Alk turned pink at 100 and red at 110
Total Hardness - did not turn red with the indicator
CYA 38

What kind of filter and pump do you have?
Hayward Pro Series High Rate Sand Filter Model #S244T
Pentair SuperFlo High Performance Pump
(I'll add those to my profile.)


I brushed this morning and, for the first time, I could see the brush on the bottom of the deep end (6 1/2 feet) AND I could see it making white brush lines through the green at the bottom and stirring up clouds of green.

I backwashed the filter (the site glass was nasty looking!) and rinsed. I have been backwashing and rinsing daily for the last 3 days. The filter has been on 24/7.

Should I shut the filter off and let the algae settle to the bottom so I can vacuum it? I'm assuming I should vacuum to waste.

I have an unused bottle of KemTek Ultra Clarifier. It doesn't list ingredients other than "Cationic Particles". Is that something I should use or just return it to Lowes?

Thanks!!