EI = Estimative index, Basically you supply all Micros, Macros, and CO2 in excess and then do a massive water change at the end of the week to keep chem levels from becoming toxic. I dose Macros (KNO3, KSO4, and KPO4) and Micros (plantex) on alternating days, 6 days a week. I also dose Flourish Excell everyday. I keep my CO2 @ 40+ ppm, to compensate for the high CO2 I diffuse room air into the tank as well to keep the O2 levels high enough for the fish.
This type of dosing allows for the only limiting growth factor to be light, which is the easiest to control. I am pushing 4+ watts per gallon of high output T5 @ 6700K which run for 10 hours a day.
120 high tech cichlid tank journal
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