It's hard to get ahold of a good tank that takes quite abit of water and is not in the way. I have seen several of them that are outside the case or mounted on the pump but they still don't quite make the rating of a good tank. Tonight we have a very nice looking watertank from Swiftech on our hands as it's mounted in a 5.25 drive bay slot so it dissapears out of your way, yet it still seems to be able to hold the amount of water you need to run a cool system.