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He admits he hasn't tried every fertilizer out there but he says that he found using only iron glutamate was all his plants needed in various client mega aquariums. I feel the same way with the exception of the use of potassium..but fish waste is all the phosphates they need. So you have pretty much the big three right there.
I'm sure you will all agree..wink,wink.
I'm sure you will all agree..wink,wink.