Hi everyone. Well, I was given a 7 inch albino common pleco because the owner was moving. He will be put into one of my 29 gallon quarantine tank until I figure out what to do with it. I can keep it with some of my Oscars, sell or give it away. In the tank, I have a piece of zucchini on the bottom of the tank, a small piece of driftwood and a sponge filter. I've had this fish for about 1 month now and the zucchini has never been touched. The only time I see him eating is when he's sucking on the sponge filter. 1. Is this harmful? 2. Can he get enough nutrition from the sponge filter or should I also try a different vegetable? 3. How well will the sponge filter last if the pleco is sucking on it. My best case scenario is that he tries the different types of food I'm going to slowly introduce or that he can get enough nutrition from the sponge filter. Thanks in advance, Ed.