slightly Elevated CYA

[Bperry]

So I did a fairly large dump last night probably about 18-20” not quite 1/2 it was getting late so I wanted to be able to replenish the water before this morning so I can run the filter when I woke up I was able to drop the cya from 119 down to 84 not ideal but a lot better than where I started a week ago at 147.

I’ve done x3 water dumps this week don’t really want to do another one but I’ll probably do one more today it took about 2 1/2 hours for the dump last night running x2 sump pumps then about 3 1/2 for the refill I’m thinking if I dump about another foot I’ll be probably close to 60

Do you feel that’s something I can live with without having to do another dump this summer with trichlor from the frog torpedoes.I think that’s what it uses.it will be dumping some in the pool throughout the summer so I’m not sure if 84 gives me enough cushion as the summer just began.I have the frog on a pretty low setting right now until I got the cya down.

Trichlor adds CYA so you can’t expect to keep the chlorine high enough to keep the water sanitary if CYA is over 80ppm. That’s assuming those CYA numbers are accurate though, which they likely aren’t.

 

[dBsooner]

Yeah. I’d do one more to get it down to 60. 60 is the top recommended for a non-SWCG pool:

lc_without_swcg_chart.jpg

• dBsooner
• Jun 16, 2023

* = not recommended

Edit: But as @Bperry noted, relying on the pool store for CYA is extra scary. That’s the one test I’ve found they almost never get right. Lol. In my own testing at a mom and pops store here, they gave me 3 different numbers in the same week. 55, 61 and 57. In that order. When it was actually 50.