Small algae outbreak.

Ted Y

Active member
May 8, 2012
38
Phoenix, AZ
After firing my pool guy due to high CYA levels causing frequent algae outbreaks, I convinced my skeptical wife I could take care of it myself and save us money. I did a full drain and refill.

I found this site and got a TFTest kit. Today, my wife found three spots of fuzzy green algae right above the waterline on the pebble tech where the water wicks up the pebbles. I bought this was odd. Is it?

Truthfully, I probably haven't been as good about testing and adding chlorine as I should, about every other day. I already brushed the pool. I didn't test the chlorine before bringing up to shock level. I was never seeing any OCL drop.

Here are my current test results:

pH 7.5
FC 16.0
CC 0.0
TA 100 (was 150)
CH 260
CYA 40

I am using BBB method. The algae was about a total of 24 inches long along the waterline in those three spots combined. Thoughts? I will be doing the shock method in pool school. The water has always looked crystal clear, i have never shown more than 0.5 CC and have never seen any OCLT. I will post up results at dark and again in the morning.

We get a solid 12 hours of sunlight per day, 100+ air temps, water temps are 84-90 already, and it has been windy lately.
 

duraleigh

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Apr 1, 2007
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Sebring, Florida
right above the waterline on the pebble tech
If it was above the waterline, the chlorine can't completely get to it. Mechanically remove it and plan on brushing the pool sides from time to time.

Mine gets that all thetime if I don't brush.
 

Ted Y

Active member
May 8, 2012
38
Phoenix, AZ
I just meant the chlorine should kill the green algae I just brushed off the wall into the pool water. :) I knew what you meant. I have been brushing below the waterline and will now brush all the way up to the top. Thanks
 

Ted Y

Active member
May 8, 2012
38
Phoenix, AZ
As of 05:15 this morning, my Free Chlorine is still 15. Water is crystal clear. I think I got it killed before it got bad. Thanks everyone.

Can I assume that I can let the FC drift back down to normal our stay at shock level longer?
 

duraleigh

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Can I assume that I can let the FC drift back down to normal our stay at shock level longer?
I think you got it, too. I would let the FC drift back down to maintenance levels as you suggest.