I have a friend that has an overtaken tank with CRS. He will give me as many as I need so if the first 50 I put in there don't make I won't put any more put will all the hiding spots I figure enough will survive. On a sad note, the male killed on of the females. He has bonded with the other female but was having no part of the other female being in the tank. Everytime he saw her he took a run at her. I found her floating yesterday when we got home from turkey dinner. The other female is plumping up so I am assuming she is getting ready to drop eggs. I need to get some black worms as I read they love them.