SLAM'd, Water Still Green, Time to Drain?

[Scotland]

I slammed the pool three days ago, and since then I've been running the pool 24 hours, keeping the chlorine at 10 or just above. It loses some during the day, but I've passed two overnight tests. I've also brought the CYA from zero to around 40.
The pool water is still green...it may be getting a bit better but it is hard to tell. I am brushing and vacumming it but there is still a lot of dirt in the pool...part of the issue us that I can't see the bottom to know how good a job I'm doing. I put socks on the skimmer baskets (to get the stabilizer in there), and they quite quickly get covered in a brown gunk.

Do you think I should drain some water from the pool to give it a head start? If so, how much do you suggest?

Br - >5
pH - 7.5
FC - 13
CC - 0
TC - 13
CH - 125
TA - 70
CYA - 30
NaCl - 800

 

[YippeeSkippy]

Isn't the SLAM process value for CYA of 30, 12?? So you never reached that or really did a SLAM. And now your CYA is 40? SO your new SLAM process FC needs to be 16ppm.

Also if your pool isn't gin-clear and you haven't done an OCLT, you didn't finish yet.

Maddie

 

[proavia]

Doing the SLAM Process is not a one time thing. In order to fully complete the SLAM Process you must complete all three criteria. No need to even do the Overnight Chlorine Loss Test until the water is clear. Since your pool is still green - the water isn't clear. Based on a CYA of 40, your SLAM level for FC is 16. You need to test the water at least 2-3 times a day and add liquid chlorine to bring the FC back up to 16.

Since you are sharing your PoolMath logs, no need to post results in replies. And no need to report BR as you have a chlorine pool, not bromine.

 

[Scotland]

I hadn't upgraded PoolMath so didn't put an up-to-date result on there. Have done now though!

Well, my CYA yesterday was about 20 and now it is somewhere between 30 and 40...so am I best assuming 40 and taking FC up to 16?

 

[YippeeSkippy]

How is it that your CYA is bouncing around so? Are you adding more? Otherwise it must be a testing error.

Yes if you're truly at 40, use 16. Have you seen the FC/CYA relationship chart? FC/CYA Levels

 

[Scotland]

Yip, I was adding some to bring it up as it was at zero when I started this.
I meant to get to 30, so I must have added a little too much.
Stopped adding now so it should stay at 40.

Thanks, I'll get it up to 16.