Hi - I've been reading/lurking for a while and finally joined today.
When my TFP FAS-DPD Chlorine Test kit arrives on Monday, I will start a SLAM to clean up a "green swamp".
I've been fighting a losing battle for months listening to the pool store -- it's time to do something different.
My CYA is high -- 90, so I'm going to lower it with a partial drain over the weekend. Get the filter backwashed. Be as ready as I can (anything else I should do?)
Assuming I went with the CYA level now, I would need to add about 7 gallons to get my FC level up to shock level (35ppm) assuming it's at 5 when I start.
I'm trying to get a really rough idea of how much chlorine I need to have on hand. Is 20 gallons likely to be enough? 40? More?
I lowered the PH earlier this week before I started adding chlorine.
Today's numbers :
FC 5+ (will know better on Monday)
We're already into the hot weather in Phoenix, so I need to get through this season and then I'll do a complete drain/refill in the fall.
Any other advice? Can you tell if I seem to be on the right track? Thanks!!