We are currently trying to figure out what we want to do different on our new 40 gallon long, we've got the black sand yesterday, we are doing a 3" sand bed.
I have been shopping around and found this http://www.premiumaquatics.com/Merch..._Code=SQUID-WM
I've seen one in my LFS
and really liked the idea of how it works. Does anyone else have one? Are there any pros or cons about it?