Algae issues and closing pool for first time

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R

Rost-Lufer

Well-known member
Jun 26, 2023
62
Southern Michigan
Pool Size
7500
Surface
Vinyl
Chlorine
Liquid Chlorine
Hey y'all,

First year pool owner here. Want to close pool but have been having algae issues. All chemicals are balanced unless I'm missing something. Algae keeps showing up where walls meet floor and random spots on floor. It's very light green and comes off easy, but it's there. I shared my pool log so hopefully you all can see that. The algae shows up even when all chemicals are testing in the ideal range. There is a chance my CYA numbers are off a little due to misreading it, but even if it's off by 10 or so it still falls in recommended range. I just vacuumed and brushed pool and added bleach according to SLAM. It's all in the pool log.

Can't run skimmer as water level is on the low side. Don't want to add water since I'll be draining below skimmer for closing. I do have two bottom drains so letting filter run like that. Just wondering if I'm doing everything correctly. My main concern is next year and not wanting to deal with the algae issue, when all things seem balanced correctly. I'm sure there's something I'm missing so coming to you all for advice!
 
Rost-Lufer said:
Just wondering if I'm doing everything correctly.
Click to expand...

It sounds like you have not followed the SLAM Process step by step with no shortcuts until you meet the 3 exit criteria.

You can do that now before you close the pool or accept that you will likely have algae at opening next year and plan to do it then.
 
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ajw22 said:
It sounds like you have not followed the SLAM Process step by step with no shortcuts until you meet the 3 exit criteria.

You can do that now before you close the pool or accept that you will likely have algae at opening next year and plan to do it then.
Click to expand...
I think I did. I've SLAMmed twice this year. Both times worked great and all levels were normal for awhile. Then algae shows up again! Get FC to SLAM numbers, make sure 0 CC, make sure less than 1ppm OCLT. With visible algae my CC is always 0. What I don't understand is my levels are good then algae shows up.
 
Post pics of your pool.

You check for algae in places like your pool ladder?
 
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