Stains on Bottom of Pool

Stains on the pool surfaces, pool equipment
or on the swimmers, or off-color swimming pool
water. Discolored but clear pool water.
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Joined: Wed 06 Jun, 2007 18:41

Stains on Bottom of Pool

Postby barr4420 » Wed 06 Jun, 2007 20:38


Just moved in a new house and it has small inground pool around 8000 gallons. Long story short it was green and with the right balance of chemicals I got all my levels correct based on testing done at pool shop.

Now for my problem and question:

In shallow end I have lots of brown spots and in deep end I have lots of black marks I thought was dirt--- Wasnt. Went to pool store and bought some black algae remover- added whole bottle and ran pump for over 36 hours while scrubbing with wire brush. No effect.

Today a local pool guy came to fix pump that was leaking and when looked at it he suggested the following:

Add 4 gallons of Acid

Run Pump with out waterfall for 24 hours

Add 12 pounds of Bicarb and run 24 hours

Check PH balance and adjust accordingly before lettng kids back in pool.

Please advise... I have pictures just dont know how to post them.

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Postby Buggsw » Thu 07 Jun, 2007 04:44

Look for answer in your other post.

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