I am about to redo my tank. I just got all my new substrate and my new CO2 system in. It looks like Saturday is going to be the big day. Well my tank is set up now and I have a buried piece of 4 inch PVC pipe the runs along the length of the back wall for Ghost to go in. He loves it. The only problem is I can’t plant anything there because my substrate is not deep enough. When I redo my tank I want to take that out, but I still want to make Ghost happy. I don’t really like the small Ghost tubes the sell at the LFS. Any one have any suggestions before I do break down my tank this weekend