majolo
Aquarium Advice Freak
I got an Azoo sponge filter (This one), and it doesn't really have directions. It lists "features". Anyway, how do I use this? There are two tubes on top, a large and a small. I assumed I would hook up an air pump to the small one and that's it. I tried it, and I just get some bubbles coming out of the large tube. I can't tell if anything is happening with the sponge. Am I doing this right? Also, it doesn't want to stay sunk. (This little filter is for a 5.5 gal snail tank I'm going to set up).