There is a real nice guy on this site that sells them. His name is Rex. He goes by rainman on the site. Search the site for this info. he may be able to help you out. If he see this post I am sure he will chime in, but he is quite busy right now delivering fish everywhere. He would be the one to talk to he is very knowledgeable about Tilapia.

The only difference between a rut and a Grave is the depth. So get up get out of that rut and get moving!! Time to work!!