I'm trying to avoid CO2. I have only half the lighting on the tank that it will eventually have. i wanted to give the plants a little time to adjust before I pumped up the light and ferts so that algae didn't take over early on. I have a tiny bit of brown diatoms on one anubias plant, but that's it. The lighting will only be about 2wpg total though.
EI is meant more for CO2, maybe Excel and cut by 1/3rd.
For non CO2:
http://www.barrreport.com/showthread.php/2817-Non-CO2-methods
Sort of a water column dosing routine, basically about 10X less than EI, dosed once a week, maybe 2-3 x a month etc. But sediment sources are wise eithe rway, CO2, none, Excel etc, along with water column dosing.
Light should also be on the lower side, 1.5 W of T8 lighting etc.
1 W'gal or T5, 0.5W for LEDs.
Etc.
No one method will meet all goals for all aquarist.
While CO2 gas is useful, the aquarist goal is the important thing, not my goal.
Regards,
Tom Barr