There have been some recent developments that I am not at all pleased with. The most annoying thing is that the "holes" that I cut out for the water to get to the filter constantly get clogged, not allowing enough water back into the filter chamber. This causes the filter to struggle making it very loud. I get a turkey baster and try to blast the holes with water to clear the debris. This works for a limited amount of time and needs to be done every couple hours.
I think the problem is that my Penguin filter has two areas on the intake tube where water can get sucked in. One is pretty high up on the tube and I think the water level is dropping down to this point and the filter is losing suction. There is a piece that you can put over that spot to eliminate water being sucked in from that position, but that piece doesn't fit behind my background. I am planning on buying an AquaClear 70 and getting an extension for the intake tube (if they make one). If not, I will fabricate an extension from some rubber tubing. This is not possible with the Penguin as it has a rectangular intake tube.
Also, some of the coloration is wearing off of the cement directly underneath the return from the filter. This isn't a major issue and is mostly aesthetic. I will definitely get a cement that is capable of being acrylically (is that a word?) sealed if I attempt this project on a future tank.
I should have anticipated these two things happening but failed to do so in the production stage.