Hello. I am called Fay, and I have not had an aquarium since I moved to Vermont about a decade ago. I just picked up a used set up and have my first 4 Vermont fish. It's an older 20 gallon glass tank, and I am still setting it up. Filter systems is ordered, new substrate is ordered, fish are surviving basically so far. It's freshwater, and I'm trying to keep it very minimal care. I currently have a swordtail, a platy, and a male and female betta. They seem fine with no air/water flow so far, but hopefully my filtering system will be here by next week. I joined here because I have destroyed the bettas fins with the substrate the tank came with (I think), but I will ask for help in the appropriate forum for that.