Buying my first external filter within the next few days and could use some advice, my tank is 30inchs x 12 x 14, making it around 100litres or 30US gallons I think.
Ive looked around and found two filters... hagen fluvial 405 and the tetraTec ex1200
http://www.aquatics-online.co.uk/catalogue/tetratec-ex-external-filters.asp
http://www.aquatics-online.co.uk/catalogue/fluval-external-filters.asp
I have seen the 405 is quite popular from looking at the the gallery of peoples tanks, however the tetra is cheaper and provides better water flow. Has anyone used this filter before? Also how loud are these things?

