Undergravel Filters

  • We are currently upgrading MFK. thanks! -neo
They aren't very good in the conventional sense. These filters work quite well though to help a system, if run as a reverse flow UGF, then using a good mech filter to pick up all the junk.
 
I use them on all my tens. They work great, as wyldfya said, in addition to not instead of.
 
i use one in my 268gal, just the normal way(as i find it helps keep debris from drifting around and then make the tank look cleaner). about an hour or so before i do my weekly water change i put it on reverse and then do a 70% water change.

i love it on the big tank
 
I have them in a couple of smaller tanks, no worries, they seem to work fine.

On a big tank where you have a lot more waste then a reverse flow U/G would be the way to go. (In conjunction with some other filtration of course)

Cheers

Ian
 
I use one on my 75 gallon, I also have a large emperor system on the back. I use it mainly to keep current in my environment. I don't believe it would be effective as a stand alone.
 
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