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Old 05-29-2012, 04:13 PM   #1
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Cyanobacteria or general algae??

Ok a friend has an aquarium that is having a major algae bloom.

Should i use/try api em erythromycin or algicide?
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Old 05-29-2012, 04:16 PM   #2
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First you should find out the cause of the algae. Too much light, too much food or too much nitrate or phosphate. Fix the problem and the algae will go away with water changes and syphoning.
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Old 05-29-2012, 04:17 PM   #3
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First you should find out the cause of the algae. Too much light, too much food or too much nitrate or phosphate. Fix the problem and the algae will go away with water changes and syphoning.
All my readings are good and i change water every week.
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Old 05-29-2012, 04:20 PM   #4
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What are the readings? Good is pretty vague. Algae feeds off excess nutrients in the tank. Need to find out what it is. Better to solve the cause than dump chemicals in the tank.
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Old 05-29-2012, 04:22 PM   #5
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What are the readings? Good is pretty vague. Algae feeds off excess nutrients in the tank. Need to find out what it is. Better to solve the cause than dump chemicals in the tank.
Oh i agree hold on ill get my book
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Old 05-29-2012, 04:24 PM   #6
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Should i use/try api em erythromycin or algicide?
You dont want to do anything anti bacterial as it will kill your nitrifying bacteria and you wont have any to complete the cycle.
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Old 05-29-2012, 05:19 PM   #7
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You dont want to do anything anti bacterial as it will kill your nitrifying bacteria and you wont have any to complete the cycle.
Then why do they sell this stuff??
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Old 05-29-2012, 05:22 PM   #8
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You dont want to do anything anti bacterial as it will kill your nitrifying bacteria and you wont have any to complete the cycle.
I cant find my book. My calcium and phosphates are normal ranges. The lights are on a timer. 8 hrs a day. They feed very small amounts to only two fish. Its a 30 gal.

Ive tried vacuuming it, water changes, powerhead to the surface.

My only thought may be the light bulbs. I may replace them all. It is unknown how old they are.
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Old 05-29-2012, 05:25 PM   #9
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I feed every other day. Lights for 10 hours a day and have a sand sifting goby in my 29 gallon and still have a little algae.
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Old 05-29-2012, 05:27 PM   #10
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I feed every other day. Lights for 10 hours a day and have a sand sifting goby in my 29 gallon and still have a little algae.


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