The Planted Tank Forum - View Single Post - Plants not growing?
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Old 04-17-2014, 02:05 AM   #12
The Plant Whisperer
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At minimum you need KNO3, KH2PO4, and CSM+B.

I highly recommend K2SO4 as well.

DTPA iron is nice to have, and so are CaCl2 and MgSO4 but the first 3 ferts mentioned above will have everything you need in them.

I usually buy from:
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