01-25-2013, 09:23 AM
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it a great filter if you have a big tank i highly recommend it from my experience.
it has adjustable flow like most filters but the difference between min and max if very noticeable,
Has two compartments for filtration media, comes as standard with two sponges but these can be replaced for whatever you like, for best results ive been told to run one sponge one carbon but have not yet to put this into practice.
The only con is that its big and bulky so sticks out like a sore thumb in an aquascape, so you might want to avoid if that's your kinda thing.
I believe fluval have a more up to date version of these filters now though with 3 stage filtration take a look: Fluval U3 Internal Filter