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by jmorber
Sat Mar 26, 2016 8:13 pm
Forum: Purple Martin Forum
Topic: Are egg shells really necessary?
Replies: 40
Views: 21599

Re: Are egg shells really necessary?

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