So I had been thinking about doing a reef without doing a reef tank. And I thought upon the Idea of using lava rock and building on that using resin marine decs and Wilko Colored Fern Plants. Got the tank sitting waiting to be done. Powerhead will come from one of my dektop waterfeatures. Unit is smaller than a Match Box. Lighting will be Desklamp or LED Crimbo Lights. Inhabitants will be a Thai Red Claw Crab and something else.