I am starting a 150 gallon cube 36x36x27 I currently have 4 AI prime HD. I will plan to eventually add a 5th as I was told 5 would most likely be necessary. I'm wondering if anyone else runs AI prime HD on this size tank or something similar. If so have you been successful? Also I'm in need of mounting ideas? I was told possibly an "x" pattern with some kind of modified rail would be best. Does anyone have experience with this?