Anybody use these? I think they'll be perfect for a nano I'm setting up. They're less than 2 square inches and flow about 70gph. I hate having large bulky things visible inside the tank and these could easily be hidden behind the rockwork.
http://www.premiumaquatics.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=T5024.04&Category_Code=Tunze_pumps
http://www.premiumaquatics.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=T5024.04&Category_Code=Tunze_pumps