I just recently set up 2.5 gallon tank, and its been running about 10 days now. I'm still in school, and I do all my homework at my desk in my room, the tank also sits on my desk. Anyways, in about a week or so, I'll be adding some shrimp to the tank. Is there anything I could put under the tank so if I drop a pen or put down a book too hard the shrimp won't freak out from the sound and vibrations? I've got syrofoam and some other kind of softer foam laying around, I just don't know if putting it under the tank will do any good.