thanks very much for all the comments. i have some more update will add pics soon. i covered 2 of the pieces of driftwood with java moss, added 3 amazon sword plants the the main tank. added like 7 different plants to the refugeum including a 3" pleco that i want to grow fast to go to upper tank also a iridescent shark that needs to grow to the other fish. oh by the way i made my refugeum a 40 gallon now. pics commiing soon.