Thanks for the quick response Tebstan....I have a 90 gallon RR Oceanic, but found a nice system in Houston yesterday..210 gallon RR with stand and canopy, kinda pricey, but new and really a beauty..I currently use the Current 48" Nova Extreme Pro over my 90 gallon, but its open and not recommended that I use the canopy I have..What systems do memebers use under their canopys and why???