How do i get rid of blue green algae? - The Planted Tank Forum
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post #1 of 6 (permalink) Old 03-16-2007, 03:10 AM Thread Starter
Algae Grower
Join Date: Nov 2006
Location: Michigan
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How do i get rid of blue green algae?

This algae is taking over my tank. It seems to be suffocating my foreground plants. How in the world do i get rid of it? Water changes do not seem to help at all. I even took the most infected plants and used a bleach water solution on them, and it just came right back within a week. Please help!
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post #2 of 6 (permalink) Old 03-16-2007, 06:10 AM
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Here's one good link on BGA:

Another good place to visit:


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post #3 of 6 (permalink) Old 03-16-2007, 06:53 AM
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Derek, do you have any current in your tank

I had a problem with this stuff a long time ago and I put in a power head and raised the current in my tank and it died! I also increased the amount of Co2 in my tank and it stayed away and has never come back. Get rid of as much of it as you can by doing a four day black out. Then increase the current in your tank and the Co2 and say bye bye!
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post #4 of 6 (permalink) Old 03-16-2007, 01:15 PM
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If we get cyano in any of the tanks at work, we dose the tank with maracyn, and it's cleared up in a couple days.

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post #5 of 6 (permalink) Old 03-16-2007, 03:33 PM
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Hey Derek,

I would:

-manually remove AMAP
-add circulation in the lower regions, & better gas exchange at surface of tank
-Cover the tank with a blanket, and do a 72 hours complete darkness.

These factors helped me beat it in the past.

In the future, try to make sure your nitrates don't hit zero as this has been identified as a contributer to the problem. GL!


29 Gallon Tank: 110W PC Lights, Milwaukee MA957 CO2, Fluorite/Sand Substrate, Checked into E.I. Rehab

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post #6 of 6 (permalink) Old 03-17-2007, 12:51 AM Thread Starter
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Thankyou! I will be doing this all today
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