Green water

[kypovan]

Hi all! We are preparing to close our pool now. Following the steps on here, we waited until the water was cold enough, then brought the water to SLAM level. The first time, the water went from 26 at night to 25 the next morning. The next day it started at 24 and stayed at 24 the next morning. (It was supposed to be at 23.7, but I added a bit too much bleach the first day). So, all was good. I kept track the next few days as the levels came back to halfway between normal and SLAM. That's where I am today.

However, the deep end of my water has a green tint to it. What am I missing?

 

[pabeader]

A SLAM is a multiple day thing. You Maintain the FC until your water is clear, you pass the OCLT and have less than .5 CC

 

[kypovan]

So it doesn't matter if the FC is the same from night to morning? If there is some green, it doesn't pass?

 

[pabeader]

Correct. Must be clear. Here is example of what clear looks like. Cloudy pool

 

[JohnT]

Was your water green before you started SLAMing?

 

[domct203]

I'm confused here, where did the OP say they were doing a SLAM?

To me the OP reads that they raised FC to shock (they said SLAM) level to prepare to close.

Hi all! We are preparing to close our pool now. Following the steps on here, we waited until the water was cold enough, then brought the water to SLAM level. The first time, the water went from 26 at night to 25 the next morning. The next day it started at 24 and stayed at 24 the next morning. (It was supposed to be at 23.7, but I added a bit too much bleach the first day). So, all was good. I kept track the next few days as the levels came back to halfway between normal and SLAM. That's where I am today.

However, the deep end of my water has a green tint to it. What am I missing?

OP- Were you battling algae? Any chance there could be iron or copper in the water? Do you fill from a well? Do you regularly use algaecide that contains copper?