40galreef
Aquarium Advice Activist
- Joined
- Sep 12, 2011
- Messages
- 173
I am looking a different sump designs, and am wondering if bio balls are effective fully underwater?
Submerged Bio-balls
- Thread starter 40galreef
- Start date
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Gregcoyote
Aquarium Advice Addict
No. They support aerobic bacteria mostly and there is a debate as to their worth at all.
AquaRick
Aquarium Advice Addict
I would just add some live rock rubble to your sump. LR + good circulation = best filter for SW tanks.
