Link119 said:Do you have either of these for the tank you plan on putting them on?
Sponge filters are simple to make if you already have an air pump, and if you dont have the hob, just buy an aquaclear (tell us the tank volume so we can tell you what to get).
But for the general answer to your question, running both is better.
Roberts48 said:It's in a 55 gal and I have had a hob on it and I just got this new sponge filter and I might as well use it along with the hob right.?