We just got a Pleco today and was told that I didn't need to buy any certain food for him since we have had our tank set up for about three weeks, now I'm thinking they were wrong. He seems to be frantically searching the glass and I'm worried. I am going to pick something up tomorrow for him, but I also saw that people give them veggies and driftwood. I was just wondering if adding any of that will contaminate the water for the other fish. I just dont want to make the water all mucky despite the filter. This is our first aquarium and I want to make sure I am doing the best for our fish. So far we have a Molly, Dwarf Gourami and the Pleco. Any tips would be great, thanks!