Currently I does dry fertilizer.
I have the following questions
The amount of dry fertilizer I put in, should it include the total amount of water or just the main tank? Example should I count my 125 gallon tank, plus my 55 gallon sump? So do I tread for 125 or 180?
Also, would it be cheaper to mix the dry ferts with water before I put in take would it last longer?
Just trying to make sure spending the least I have to.