• Looking to buy a cephalopod? Check out Tomh's Cephs Forum, and this post in particular shares important info about our policies as it relates to responsible ceph-keeping.

30 gallon hex

I've heard stories like this from time to time...and yes, you can keep a bimac in a 30, but as Jean pointed out, the system inevitably fails due to under-filtration. Even a 50 requires fairly constant maintenance. It would be an o.k. size for a dwarf, however.