Forum Title: What is this chemical??
My pool was officially opened yesterday(H2O-60 degrees-brrrrrrr!) Anyway, I checked the skimmer baskets after it was on a while and found one filled with something that looked like white lava rocks inside. I imagine it is something dissolving into the pool but what is it? Usually they leave the empty containers for me to dispose of but this time they didn't so I have no idea what it is. Any ideas? I was also ****** to fine they didn't shock the pool. They always used to. My FC was .5 today and it was crystal clear when we took the cover off. But I digress. Thanks!!
Category: pool Post By: LANCE ERICKSON (Lynn, MA), 02/06/2019

filled with something that looked like white lava rocks Click to expand... Broken up tri-chlor pucks? Any rounded edges on them?

- DIANE TORRES (Missouri City, TX), 03/30/2019

I'd bet it's Trichlor like Dave said.

- KIMBERLY HARRIS (Eugene, OR), 04/18/2019

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