Quote Originally Posted by Submariner View Post
There is a great DIY plans database at aquariaforums.com (formerly king vinnie's marine pages). Maelv how did the auto top-off work out?
It worked just fine, it was made out of a 5 gallon jug and used an air stone. I used it for a couple of months and then bought an auto top unit that I placed in a 32 gallon trash can that I used to store my water and pumped it out with a maxi-jet 1200. I personally wouldn't use the auto top off, but you are more than welcome to have the instructions if you'd like.

http://www.autotopoff.com/products.html