I have had the pool for 5 years and each year it look ok but not has good as the year before. This year I decided to open the pool myself and take things into my own hands. Of course I immediately added pucks to the control flow unit and shocked with granules...Yeah all the wrong things to do. I did get some green out but not much.
Then I found this website. Thanks for all the info that is listed here. It gave me the info and the confidence to move ahead..kind of...
I had super high CYA levels. I was overanxious. So I thought I could cheat. Drained a mere 4 inches of water out, refilled, and thought I could blast the green away so I added 12 121 oz jugs of 8.25% chlorine bleach. Over the next few days the pool got a little clearer.
I re-read the site and deep down knew that doing a proper SLAM at my CYA levels would take a lot of chlorine and a lot more to maintain over the course of the summer.
So this morning I did my strip test.
I only have test strips but a k-2006 is on order and should be here by April 23. My strips showed CYA levels still over 100. I did my own fuzzy chemistry test. I put 4 parts of pool water in a cup and added one part fresh water. I was able to see a move to a more normal CYA reading. Added one more part fresh water and the color match the 30-50ppm CYA color chart. That indicated than I needed to remove/replace 1/3 the water in the pool.
So I took the plunge. I set my control to waste and drained out 1/3 the water. Currently refilling but off of a well that only generates 3 gals per minute. So it will take some time but I can wait it out knowing that I had to take this first step to correcting the issue created by pucks and "weekly shock".
Once I get it filled I will SLAM, do the overnight FC test, etc. Have been buying Liquid Bleach to prepare for the big day.
Thanks for the site. Wonderful to finally know how to do it right.
30,000 gal, Vinyl, IG, Hayward 1.5HP Super Pump, Hayward PRO™SERIES SAND Filter S220T, VariFlowXL control valve, AquaBot T2 Turbo