- Joined
- Feb 11, 2008
- Messages
- 63
Hi All,
I am planning to use crushed oyster shell over an undergravel filter as a secondary biological filter system for my bimacs (this will be in a separate water conditioning tank; I know about octopus disrupting UG filters by burrowing!). Will crushed oyster shell from feed supply companies (cheap and readily available) be of sufficient quality or do I need to get it from a mycological supply company (more expensive and harder to find).
Thanks in advance for any advice!
I am planning to use crushed oyster shell over an undergravel filter as a secondary biological filter system for my bimacs (this will be in a separate water conditioning tank; I know about octopus disrupting UG filters by burrowing!). Will crushed oyster shell from feed supply companies (cheap and readily available) be of sufficient quality or do I need to get it from a mycological supply company (more expensive and harder to find).
Thanks in advance for any advice!