More DE?

[Shifty]

I just tested the chlorine and pH after a weekend of swimming and both have held relatively stable from the 15 June test results above. pH stayed at 7.2 and FC fell to 1.5 ppm. I just added two (2) 186 oz. jugs of 6% bleach. I'll test the chlorine level in about an hour or two, then test first thing in the morning to see if the level held overnight.

[Watermom]

Shifty,
Like Janet told you above, you are not keeping your chlorine high enough. With a CYA of 45, your chlorine level should always be between 3-6ppm. When you drop lower than that, algae can get started.

[waste]

Welcome to The Forum!

Here is a link to some info on DE filter care and use (found in the second sticky in the Pool Equipment and Operations section).

Please keep us informed as to your progress.

[Shifty]

I think due to my FC being around 2ppm after the weekend, algae has started to appear on the floor and walls. The last two (2) evenings I have brushed the floor and walls then added 6% bleach in an attempt to raise FC while battling the start of algae. My CC has been around 1ppm and FC has decreased a little overnight so it seems I have a few more days of shock level (CYA is around 50 so using Ben's chart shock level would be 15ppm) to get CC less than .5ppm. My water is still clear.

I plan on vaccuuming after work followed by another evening round of brushing and bleaching. Any suggestions on how to clear the floor and walls?

June 18
Evening FC after bleach: 8ppm

June 19
Morning FC: 6ppm
Evening FC after bleach: 15ppm

June 20
Morning FC: 12ppm

[aylad]

Looks like you do have a little ways to go before you can let it drift back down. Keep it at shock level, brush after your chlorine additions, keep pump/filter running, cleaning filter as pressure indicates....it will clear up but will take some persistence.