Run around at pool store

[miker1755]

Regarding high CYA + high chlorine (HiC2) -- we had a pro & con discussion among the moderators and the PF Team members, and the downsides most people were concerned with were

1. The need to use EXTREMELY high chlorine levels to clear mustard or black algae, possibly over 50 ppm. These levels can take a very long time (3+ weeks) to drop.
My black algae seems to survive no matter what but I haven't trield CL levels that high!

2. Difficulties with pH testing (see the Taylor pH interferences video -- stickied in the Testing section)
Do you recommend I keep my pH around 7.0? My saturation wheel readings indicate that my pool will be better off (I can't remember if it was to be corrosive or otherwise) at 7.4 - 7.6

I saw no cloudiness and assumed the sediment on the bottom was the soda ash (washing soda) so I assumed that was to be expected. I will re-review the thread and re-run this weekend.

After having dumped so much borax into the pool, should I be backwashing my DE filter even though my pressure remains acceptable?
Just FYI, I took back 40# of pucks and 25# of shock to the pool store today so I am pleased with the PF approach. KUDOS TO THE TEAM! ;-)

Currently it seems I have to add 1/2 gal of CL ever 2-3 days but am still trying to fiddle with it to get a better baseline.

Does a high CYA level actually mean you lose less CL daily or is your CL level high enough that even after 2-3 days your CL level doesn't drop to the point where an algae bloom can get started?