George771177
Member
Doing a tank 3 day blackout. I have done a blackout before I was just wondering if since I have a refugium if I have to leave an air hole for the tank to breath. If it is getting fresh oxygenated water from the refugium/ sump in the bottom of the tank does the top need a hole????
Should I leave my refugium light on or cut that off too???
I added a substraight to an already set up bare bottom so I believe some light will get through the bottom of the tank...
Should I leave my refugium light on or cut that off too???
I added a substraight to an already set up bare bottom so I believe some light will get through the bottom of the tank...