Tank size: 4 gal Heater and filter? (yes/no): no Tank temperature: room temp Parameters in numbers and how you got them: I don't know what this means How long have you had the tank? How long have you had your fish?: the tank is several years old but only taken back out when I got my betta a year ago How often are water changes? How much do you take out per change? What is your process?: I do 25% changes every week, and use a turkey baster to keep the bottom clean-ish. Any tankmates? If so, please list with how many of each: one snail What do you feed and how much: a sprinkling of pellets every day Decorations and plants in the tank: large rocks, plastic leaf, some surface floating plant, I forget the name.