S SilverSurfer Butterfly Fish M.A.S.C Club Member Jul 20, 2015 #1 Jul 20, 2015 #1 Hey folks have a blueline model 40x doesnt say how many gallons per hour it puts out. Anyway putting it on a 135 gallon tank bought 1 16" ghost style overflow planning on getting a second. Was wondering what size return holes should I drill !"?
Hey folks have a blueline model 40x doesnt say how many gallons per hour it puts out. Anyway putting it on a 135 gallon tank bought 1 16" ghost style overflow planning on getting a second. Was wondering what size return holes should I drill !"?
