idea for barebottom tanks

[Bob I]

I have a bunch of plugs that Sleeman made for me out of that concrete rock (Aquacrete ). Among them are some large pieces. They are about 1/2 inch thick. I had the brilliant idea (blow own horn) that they might be nice as a bottom material for BB tanks. So I stuck on some of my faster growing zoos, and placed them in my 15G nano. I think once they grow a bit they will look real nice. The rock will also grow Coraline algae in time. Here are a couple of pictures. I will do some more when the zoos grow a bit, and the algae forms.