Gomer4378
Aquarium Advice Activist
I have a 120 gal main with a 15 gal sump/refuge and 200 lbs LS and 200 lbs LR,
Do I need Bio Balls in the sump or not?
Some say to get rid of them and some keep them. What does everyone on here think?
Do I need Bio Balls in the sump or not?
Some say to get rid of them and some keep them. What does everyone on here think?