I have been spending a good part of today trying to understand a sump system and how to integrate an automatic top-off.
My question however revolves around a piece of equipment I usually see in freshwater.
Why do I keep seeing pictures of peoples sumps with some sort of compressed gas and a regulator? You don't need CO2
on a reef right?
I am getting ready to sell mine in anticipation of getting rid of the freshwater, but if there is a possibility that I will need a regulator and CO2
tank, Ill hang onto it.