I plan on getting an Aquatic Life T5 HO Hybrid 4-Lamp Mounting System Fixture, 48-Inch for my 90 gallon mixed reef. I really don't want to suspend it from the ceiling (for several reasons) so I'm looking for ways to mount it on top of the rim of the tank. I haven't seen any alternatives to hanging them. I would think there would be some sort of legs to stand it on each end of the rim. It would be nice to be able to adjust the height according to preference and to achieve the light spread more evenly. I don't think I would trust using any of the screw-on 'necks' I've seen used on other lighting systems because of the weight of the 4 T5's and the 2 or 3 HD Prime HD's combined. Any ideas or examples would be appreciated. I'm open to suggestions. Thanx