<< Some one on the rec.*.cichlids newsgroup mentioned that they buy the small >pots > designed for burning 'essential oils' from the local $2 shop - they come ready made > with a hole in the side :) and are cheaper than terracotta. >> If these things are glazed, I would be hesitant to put them in my tanks. The majority of glazed ceramics not intended for food use (and even some that are) will leach out an incredible amount of lead. Bob Dixon