- May 27, 2007
- Reaction score
I've heard of using oyster shells now for a long time as a top dress for a calcuim source for paphs and mexipediums (maybe phrags too, but I'm not sure) but I was thinking to myself the other day...Why couldn't you use egg shells??? I'm sure that for some people they are easier to get a hold of than oyster shells and they do the same thing, break down over time releasing calcium into the substrate. I make a fermented tea called Kombucha that is very acidic (2.3 - 3 when finished) and I read also that you can add cleaned egg shells to it to bring up the ph. Anyone else have any ideas on this?