Dayum.
wisper filters totally suck.
i remember when i was stupid.
i had a bunch of wisper filters.
even ran threw quite a few.
upgraded to stronger wispers.
ended up all the same.
angry. fed up. tired.
i used a damn toothbrush to clean the filter.
and they got clogged with crud so fast.
frequent filter *** changes.
so much build up, that causes filter malfunction.
and you gotta clean that damned tiny filter box.
rinse the black sponge thing....
thank God.
i met a friend. who told me the proper ways of filtration.
new toys. gadgets. and fishes.
then introduced to me to this wonderful Forum.
now i have over filtration on both my 40 gallons.
and only hang on filter i own, isa penguin 350 [75 gallon filter]~
if anything. just grab an AC110.
[Aqua Clear 110: filters 60-110 gallons]
i heard lots of good stuff about em~