Hello! I recently 'adopted' a male ACF from a friend who is moving and didn't want to take him. He was given to me in a relatively small BOWL with a plant floating at the top an large river rocks at the bottom. She said she has had him 2-3 years, and I believe he looks pretty healthy despite his not so wonderful living conditions. We moved him into his very own 10 gallon tank with many rocks and hiding places. My question is about filtration. We set the tank up with a sponge filter in it. He has been in the tank now for about 5 hours, and I have read conflicting things about their sensitivity to water vibrations. I got nervous and when I went in to turn off the light I unplugged the filter to hopefully help him settle in. I plan on turning it back on for a few hours tomorrow. Do you think I should just nix the filter? He has been in the care of my friend for 2-3 years and has never had a filter, do you think he is too old now to adjust to the vibrations? We have other tanks in the house that we do water changes on weekly, so we'll be cleaning his tank weekly regardless. I'm just not sure what the best path is to take! My kids adore him and I don't want to do anything that will harm him!