What would cause GDA on a fast growing plant leaf???

bsmith

AC Members
May 29, 2007
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I know too much light but I have a TON of co2 and EI ferts. I believe it is from lack of something but I dont know what.
 
I only get Green Dust Algae in my high light tanks, and only on the glass. The only way I know of controlling it, is through light duration. Green Spot Algae can be cause by a lack of phosphate.
 
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