It has a 4800l/hr pump in it ( a bit extreme but had it laying round) and has a 2lt bucket on the inlet with filter medium in it. Have to clean it about once every week or so but it only takes 5mins to wash it out with the hose.
Ben
At the moment they are to small to get out, but i'm getting some perspex cut to extend the walls about 150mm and it will have a mesh lid so the local birds and cats:evil:don't hassle them to much...