I have a 3 chamber sump (skimmer -> refugium -> return).. The return section is approximately 9"x12"x16".. I am going to install an external return pump so it will open up that chamber of the sump... All i will have left in that section will be my ATO osmolators... I am already running Carbon in a reactor and will use another reactor for GFO or Matrix..
What would you use this space for?
What would you use this space for?