I tried taking it to a closer fish store, becouse it cant handle the currents. I had to turn off my powerhead, and for the most part he is doing pretty good. he sure does move alot of sand around, and he is pretty entertaining when he is out. The fish store i called would not give me anything for him, but dont have any problem selling it for their profit. I wanted to exchange it for a shrimp, but all they said was we will take it off my hands. That dont seem fair to me. It seems well enough in my tank for now so i will take it back to where i bought it when i get back down there, its about 1 1/2 hours away, so i dont get down there much. I am courious about one thing though. Why would he not see a foot in dia. in my tank, or do you mean in any tank? I researched all i could learn, my tank is healthy, and when my 90 gal. is ready i think it would be a great compliment. If it did get to big i would get rid of him