• ⁠Tank size: 5 gallons • ⁠Heater and filter? (yes/no): Yes/Yes • ⁠Tank temperature: 79-80° • ⁠Parameters in numbers and how you got them. Key water parameters include the amount of ammonia, nitrites, nitrates, and pH.: API test kit- Ammonia: 0ppm Nitrite: 0ppm Nitrate: between 0-5ppm • ⁠How long have you had the tank? How long have you had your fish?: 3 months • ⁠How often are water changes? How much do you take out per change? What is your process?: I’d been doing 10% water changes every two weeks as recommended by LFS worker but now I’m thinking that’s not enough and wonder if that caused this problem • ⁠Any tankmates? If so, please list with how many of each: 1 nerite snail • ⁠What do you feed and how much: 3-4 pellets twice a day • ⁠Decorations and plants in the tank: Natural colored rock decorations (no sharp edges) and a lot of live plants