Purple/blue looks OK on the back....I might should have went with solid black but I don't want to repaint it.....
Since this will be a shark tank, I need to make extra sure that my rock formations are steady....I was thinking about doing some PVC shelves, with a twist. In addition to holding up the rock (and making caves), I thought I might drill a bunch of holes in the PVC, cap off the ends, then run it over the back of the tank and into a pump coming out of the sump. That way my rockwork is always aerated, less detritus buildup, and more flow.
Has anybody done that before that could give me some advice?