Hey! Does anyone still use any of the older, more "inferior" gear like air driven corner box fiters, sponges, UGF, etc?
To certain extend yes they do provide mechincal filtration.piranha45 said:sponge filters are only useful as bio filtration, they dont offer any mechanical filtration right?
There's no filter media in there. Just a sponge looking filter.piranha45 said:do you have to replace the filter media inside them, then?
Ooohh...those. usually I add ceremic rings or volcano chips plus filter wool.piranha45 said:im thinking of the filter where its hooked up to an air pump, and its just a plastic shell in which you add some sort of media, like cotton/carbon etc, and the bubbles exit the top of the device and thereby create surface movement