I am not super new to keeping Bettas, but it has been around 8 years. A friend of mine wanted to get rid of his 20 gal tank (it has an ADF) and gave it to me so I could get back into keeping fish. I haven't picked up a new betta yet, but I am super excited. My last betta I had went on to live for 5 years (I had it for two and gave it to a friend because I was moving cross-country. It was their first fish). Right now, everything is set up in my 10 gal while I give the 20 gal a deep clean. I don't see me using both at once, but it is nice to have a secondary.