Bella is now in her new 20 galon home (hiding out). My question for the day is how often do I need to clean the tank? Also I bought this moss mat, because it's water only washable , the real stuff had a lot of chips and particles and I didn't want to risk getting something in het sore foot. Nowhere does it say how often I need to take this out to clean it. Does anyone else use this type of substrate?