Ben7

Hello all,

I have always used commercially prepared fertilizers for my planted tank and am getting ready to make the jump to making my own. As I am new to this area, I was hoping for some advice. I have read up on the EI and PPS methods and found a few different recipes for mixes, but, realizing that there is no "right" answer to this question, I was hoping for some advice considering my setup and conditions.

I have ordered a pound each of KNO3, KH2PO4, K2SO4, and MgSO4. I already use seachem flourish for my micros, so I am just looking for macro fertilization here. I have a gallon of distilled water and am wondering how much of each to add and how to dose those macros and my seachem micros.

Ideally, I would like to fertilize 1-2x weekly and (due to travel, etc) do water changes every two weeks.

Here are some of the tank parameters:
90gal heavily planted amazon planted
~200w PC light, 48w actinic for coloration
Pressurized CO2 at 2bps
Gravel substrate
18 cardinals, 6 corys, 5 otos, cherry shrimp
pH 7.6, KH 13, NO3 0 (I have not been adding macros for the last couple weeks, which I guess is why I have BGA... hoping to remedy soon!!)

Any advice on whether EI or PPS would best suit me and advice on preparing the fertilizer would be great!!

Thanks,
Ben