it is a ten gallon tank. I was thinking of getting some corals, which is what I am assuming means it will be a "reef" tank, correct me if this is wrong. so if I am getting corals, then get a protein skimmer? I would like to keep the tank in the best possible shape regardless, so if a skimmer will help, then I will probably get one, the beauty of these nano set ups, is you can get all your equipment for much cheaper than if it was all for a larger tank, I have already spent 100 bucks on LR, which would have been much more with a larger tank. anyway, looks like my cycle is finally getting where I want it, I have only been checking for nitrite, i guess now it is time to get a nitrate test kit. I am curious how much of a bioload the blue leg crabs are on the tank, I have four in the tank now and since the addition of the rock they have all but disappeared, I was thinking of getting about 5-6 more, you think ten blue legs would be too much? ok enuff for now, peace