we bought a 110 gallon stock tank last week and we set it up. its pretty good, though we didn't tighten the plug at the bottom so there was a very slow leak, something like maybe a gallon a day, but because of the size, there wasn't even a noticable drop in water level, especially since my brother spilt 20 odd gallons of water on the floor at once during one of the water changes. filter is waaaaay too small, i think its only doing like 1/3rd of the recomended 10x gph, but hopefully it'll be able to make my own filter soon and solve that problem. we have all our goldfish in it right now, but thats only 4 fish anyways. 1 common, around 4", 1 ranchu, around 2 1/2", 1 oranda, around 2 1/2" and another oranda, around 1 3/4". they all seem to be doing well now and i bet they like it more than the 25 gallon tub we had them in until we got this set up.

and here are the fish: