Free Chlorine issue

With that much chlorine loss, I still think you have algae.

At a minimum, do an overnight chlorine loss test. Link-->Overnight Chlorine Loss Test
You fail, replace 30% of your water, and follow the SLAM process. Link-->SLAM Process
i am relacing 30% as we speak. once I have the CYA in check I will slam the pool! thank you for your help
 
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Nice pool. Great job on the CYA...you go!

Full House Ok GIF
 
a curious question. i see lots of you here use SWCG on their pools. are you able to use this on an above ground steel pool? I thought I read that it is not recommended due to salt
All chlorine pools contain salt. Many “non salt” pools will have the salinity level of a salt pool after a few years.
All manually added forms of chlorine add salt to the water along with Muriatic acid, calcium chloride, and of course the salty people 😃
Moisture rusts pools and is the real enemy.
Keep the moisture away from the pool wall.
Some above ground pools may have their warranty voided if not “rated” for salt use & its expressly worded in the warranty.
Many are “salt friendly” or whatever they say. It varies by pool model. There are many “salt friendly” pools on the market.

It reminds me of mattresses, not too long ago in order to keep your fantastical 20+ year warranty you had to buy the matching “foundation” and prove that you had a sufficient frame to support the mattress. Fast forward to now and they will sell you an adjustable frame bed with that same exact mattress that lets you bend it in half & it’s suddenly ok! They simply lowered the warranties (that they rarely get taken up on or approve anyway) and are making more money on the frames.
 
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