if you cant find a lid just use a HUGE piece of PVC lolhailmike;2877733; said:i know this is pretty old but i was wondering how this worked out. did you make a bigger one or did you just stay with this one? i've been looking for ideas on a diy can but keep coming back to this plan. i want to use a 5-6 gallon bucket but i can't seem to find an air tight lid. i love that it looks like an eheim classic.