is it possible to place flowerpots in your breeding tank? The normal red ones... I would like some plants in my tank but I have a bare bottom tank.
Will this be harmfull for my fish or water?
By red I assume you mean terracotta pots. As long as they are new and clean then yes they should be fine as terracotta is inert if memory serves me correctly. Either way, I've used them many times with no problems at all.