I have a 52 cube that I intend on putting a bimac in. Firstly I will say that it is going upstairs and so a sump is not an option. Been there done that, got the hardwood bill. I have a remora hang on skimmer and about 50 lbs of live rock. Tank comes with a tight fitting glass top, but obviously the skimmer is there so I need to cover it in some fashion. Any ideas on this? Also what else do I need. I have heard that powerheads are bad new for Octopus so what can I use for water movement. I have a canister filter that I was going to fill with live rock, or bioballs. Would that work?