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post #7 of (permalink) Old 11-05-2012, 03:06 PM
HD Blazingwolf
Planted Tank Guru
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Join Date: May 2011
Location: Chattanooga, TN
Posts: 4,907
ferric phosphate which is formed when iron and phosphorus meet is usable by plants, its actually in a lot of terrestrial fertilizers. HOWEVER, it requires a lot of enery for the plants to use it, and it takes a long time for it to degrade enough for the roots to pick it up.

that being said i would alternate my dosing days to prevent this, what kind of light ? co2 if anyt do u have?
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