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That won't work ....I'm blind as a bat without my glasses and I can't see a thing.....spots are so small I couldn't find them .besides I may live in Florida...but to me it's still early spring and my water is still way too cold to get in. - - - Updated - - - So...tell me what's the deal.....do...

I'm not sure how to scrape any off....it is all on the bottom of pool and I can't reach it. I tried to take some photos....but it's sunny and windy so I can't get a picture that you can see anything. Thanks for your help...I tested pH again today after adding acid yesterday...ph is now 7.6.

I read here http://www.troublefreepool.com/content/180-Black-Algae That a SLAM is not how you deal with Black Algae I know I need to raise my chlorine some more...I was just asking in what Oder I should correct what is off....I raised the chlorine to the high end of normal...then stared on...

Adding acid was the 2nd thin I did after raising the Chlorine with bleach...my PH always creeps up here...I usually treat it once a week...the long period away let it creep up higher. I started flowing this program after a bad algae bloom two years ago in the spring...I truly have had a trouble...

I just came home from 3 weeks away. When I left pool was clean , clear good chlorine number and PH balanced. After vacuuming ...I noticed lots of black spots scattered all over the bottom of my pool. Brushing in the usual manner did not remove them. My test results are as follows FC 2.5 PH...