1000 liter non CO2 and EI possible?
I have a 10ft tank that is currently running full of Crypts, Java Fern and Anubius.
Im using moderate light, EI and pressurised CO2 with great results.
But......i would like to turn off the CO2 as quite alot gets used in a tank this size. one 9kg bottle per month.
Can i continue using the EI method to fertilse without CO2?