I found one that is similar and way cooler.
http://sliceforms.wordpress.com/2010/12/
With vector Template.. Well shows you how to make one anyway :thup:
Snails are awesome. They hide away during the day and at night the come out and clean the tank. Every now and then i cull most of the population. I have Red Ramshorn Snails.
I've had my tank running for quite a while now and I don't even bother testing my water params. Just change the water when I remember/can be bothered, which is like one a month.