>> Stay informed about: Fluval Underwater Filter
I just set up a 4 plus in my 38gal tank and I'm impressed. If you don't set
the airflow control too high the filter is very quiet. I set the flow
control to it's lowest setting and it still seems to be moving a lot of
water. It looks like maintenance will be a breeze compared to my 204
cannister filter. I'm letting it run with my cannister for the time being
till the filter gets a good bacteria culture started. Time will tell I
guess but so far I like it.