woody390
Aquarium Advice Addict
- Joined
- Oct 9, 2012
- Messages
- 1,041
I have a turtle tank and have set up a sump on it (it's an old marine tank) . I want to place some bio balls in there as biological filtration. Does size make a difference for bio balls like is it better to have more small ones or less larger ones or no real difference?
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