For now, it's just a single 2" wide polycarbonate frame machined for a spline to secure the ¼" mesh screen. But I don't like it.
During my next foray into machining polycarbonate (this next week), I'll probably make another frame and go with the aluminum screen top like I have on the smaller tank. The aluminum frames are rigid and easier to handle when cleaning, aquascaping and feeding. I'll probably add a feeding window into the new frame so I don't need to remove the screen to feed.
The polycarbonate frame would help those that are impatient with cleaning their glass, but I have no experience with that.
It’s all ball-bearings these days
