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post #12 of (permalink) Old 04-17-2014, 02:05 AM
Planted Tank Guru
Zapins's Avatar
Join Date: Jan 2006
Location: Harrogate, TN
Posts: 2,345
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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