[Mako]

Lets say I have my twenty gallon tank with 3.25 wpg, and co2, do I absolutely have to dose EI or something similar, or can I just do weekly ferts?

 

[mrbelvedere]

EI can be used weekly, with a 50% or larger waterchange.

 

[Mako]

So your saying that I can put all the ferts in at once after my weekly water change, and not add anything until the next water change?

 

[DiabloCanine]

So your saying that I can put all the ferts in at once after my weekly water change, and not add anything until the next water change?

That is what I do on 21 tanks.....DC