DB9181
New member
1 or 1.5 ml is fine. It's not strong. I never worry about PH in Z&P tank because when the light off then my sum light is on to balance the PH. I change water every 2 weeks so the alk not up and down a lot. The V keep the N and P low that what I want.
Sounds good - The frag tank is a 20L no sump so I'll just do 1ml so i dont push it.