I spent a good hour on this tank the other evening. First off anything over 40 watts and it was dry hit if you took a toot less than 3 or 4 seconds from the last one.adjusted the cotton slightly and was much better..no dry hits at 90watts...left it for 5 mins to make sure there were no leaks etc.Kept my eye on it and nothing,no air bubbles stirring etc,I thought woohoooo,yes excellent....3mins later it pissed itself all over the mod,my jeans and the floor....christ allmighty,Im sure this tank was invented to drive me insane.