I am thinking about doing a DIY "waterfall" for the 125 in my office.
My thought is that I am going to get some of the 3d "rock" background stuff, and build a small wall above my tank that will lean back against the wall in my room.
I will then tap into the canister output with a Y and a flow valve and run that to the top, with a spray(trickel) bar.
I have an extra flourescent fixture I can mount to the top.
I would like to put a plexi "trough" at the bottom.... in my tank and plant some bamboo and peace lillys.
The whole thing will enter the tank behind the light fixture and the plants will come up behind it.
I have photoshopped a pic to give you an idea what I am thinking about.