Ok so I have a bta that has split from one to three.... for now. My clarkii is all up in the two that are attached to the rock and I was lucky enough to get the third one off the rock and in my net at the top. What I was wondering is I have this glass cup thing that my girlfriend wants me to try and put the split in for a mocha that we got a few weeks ago and I have no idea how I should go about this. Bta first than sand and small rock or vice versa or just glass.