BrendaVR
I've had Salt water reef tanks for going on 20yrs and I wouldnt be surprised if the crushed coral has the same if not more calcium and nutrients as the oyster shell.
James
Search found 1 match
- Sat Mar 26, 2016 8:13 pm
- Forum: Purple Martin Forum
- Topic: Are egg shells really necessary?
- Replies: 40
- Views: 37140