01-11-2010, 07:30 PM
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Originally Posted by jaysee
Are they real leaf fish or bush fish?
I like internal filters for a little extra filtration, as well as moving water in a dead spot like a powerhead, but, they really can't hold much media, nor do they provide enough gph. The reason canisters have lower flow rates than HOBs is because they hold significantly more media and are more effective for it. HOBs hold less media so they have to turn the water over more in order to do the same job as the canister. Now, internals have even less media than HOBs, so.....
I'd have to strongly disagree there. I can only speak for the bran mentioned up top I use, but these sure old much more filter media then a comparable sized HOB for one and second they clean the same size tank (in my latest 2 cases a 45 &55g) much better then the HOBs and I bought the model suggested for a 50g, which is actually on its lowest dialed setting still WAY too powerful for my 45g tank.