Here's what my Pacman VIv has turned out to be. I have it growing and just added the Brom in the front today. I did have an aquafer. flowing through the drainage layer and being pumped up behind the background and flowing down it, but for some reason the substrate kept becoming overly wet even with the wafer flowing back into the drainage layer. I tore the whole thing down 3 times trying to figure out what was going on with no luck. So I pumped the aquafer water out and am leaving it as just a drainage layer.
I'll. try and get the build log up soon.