Highly effective and reef safe....
Tunze Comline® Filter 3162 is a super quite very small German built internal pump that will work beautifully in any type of aquarium.
100 Micron Filter socks have become the preferred mechanical filtration way of removing un-dissolved solids in a sump.
Tunze Comline Filter 3161 is an amazingly efficient compact "Surface Skimming Filter". This little dynamo will keep your surface of any type of aquarium sparkling!!