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Old 11-18-2012, 04:11 PM   #4
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When you use CO2, your plants require ferts.

What plants do you have and how many of them do you have? How much, what kind and how often are you fertilizing?

You're experiencing algal blooms because of an imbalance between lighting, CO2 and ferts. Once we know more about what's in your tank and what you're adding, TPT folks will be able to give advice.

It's not because you're feeding too much or you'd have other issues.
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