OK, I was curious at what level of FC you want to close your pool at with no vinle liner damage? I am closing it on thursday.
Here are my numbers:
I have the polyquat and plan to add that and a bit of metal sequester to control the iron and copper levels.
I then plan to pour a bit more liquid clorine on Wednesday morning of about 66 ounces of 12% to get it to at least 10. I then plan to just let it drift back down on its own and then start to drain the succer Thursday morning and do the closing processes.
What do you think? Am I on target here?
The pool is at 66 and we are for sure done for the season. Wierd weather as now its warm a couple days this week, and then back to low 60s for the highs next week so its defitely time to close.
I just want to be sure as I am using the BBB method of closing this year. Last year the pool dude did it, and I had a green pool in the spring that never did clear up until I switched to the BBB method and that took 10 days. Pool has been sparkling clear ever since and never really had to "shock" the thing as I had my handy dandy TF100 kit to control the FC levels.
Off topic a bit but its a funny story: Went to pool store with a water sample. Dude said that they now use power tablets with the computer. Great I thought. He ran the test, hit print, and said WOW. Must of done it wrong. Says you are completely balanced and that you dont need to do anything!
HA Ha. He asked what I was using so I told him. He said, oh yea we sell that for $100 bucks due to it being a comercial grade test kit. Chuckled, said nope. Got one cheaper. He said where. Told him. PB said oh yea, I been on there. I said good, then you already knew this didnt ya and walked out.
WHOOOWEE! That made me laugh this morning!