supersmirky

I don't see why not. I have 2 tanks that are 20 gallons each with no filter as I have tons of plants in them. The Elite was meant for filtration in tanks so as long as the foam is in there, it should work good for biological filtration. Or if you feel better, you could put in just a little sponge filter

stuckintexas

what you put in the water will dictate the ammount of filtration needed. if the elite is used for diffusion, it really doesnt do much filtration. the sponge is taken out of the filter and put on the output of the filter...you see what i mean if you read through the thread on that diffusor.

for a 10G, a sponge filter works...what about a small hob filter, just make sure water level is high enough so it doesnt agitate the water too crazy. again, depends on your bioload...