green to cloudy SLAM

[cholmes28]

I am not an expert at SLAM's, but been through about 6+ over the years. Normally, I have no issues. This time, I let the pool turn very green. I began the SLAM with CYA at 35 (which is what I thought it was because it has been that all summer), and that put my SLAM chlorine at 14. I brought it up, tested 3-5 times a day, maintained it, brushed, etc. The water went from dark green to clear but very cloudy (could not see drains, or even the brush head past about 5'). I am still losing about 3ppm chlorine overnight, so I know there is still algae, but it normally does not take this long for the SLAM. So I decided to test the CYA at pool store just in case all the rain we have gotten caused it to drop (I know the rules about pool store testing, but I am out of the solution, and figured with the machine testing, it cannot be that far off). They said CYA was 20. You guys have always said that anything below 30, just to use 30 as the number.

All this being said, do I assume it is 30, and just keep slamming, or should I add some stabilizer, retest CYA, and continue SLAM based on new CYA, or what? It has been 5 days, and I normally am a lot farther along or even done by now, and never really recall it being so darn cloudy.

 

[PoolStored]

but I am out of the solution, and figured with the machine testing, it cannot be that far off).

Order reagent. Trust the test. Yes, machine testing CAN be that far off. Link--> R-0013 CYA Reagent (8oz)

I began the SLAM with CYA at 35 (which is what I thought it was because it has been that all summer), and that put my SLAM chlorine at 14.

CYA degrades over time, 5-10ppm per month, or even higher if your water temp is higher. If you don't know your CYA, then you need to test it. In addition, we always recommend you round your CYA up to the next 10, so IF your CYA was 35, it is actually 40 and your target would be 16.

You guys have always said that anything below 30, just to use 30 as the number.

That is not something our guides/experts/mods would say. We would recommend testing and adding sufficient CYA to raise your CYA to a minimum of 30 before slamming.

Order the reagent. Test. Raise your CYA to 30, even if you have to raise in 10ppm increments. Then continue SLAM.