Tropical Fish Keeping banner

brown slime

  1. Beginner Freshwater Aquarium
    My new fish tank is cursed. I’ve had a Convict Cichlid in the same 10-gallon tank for eight years with absolutely no problems. He is approximately the diameter of a softball, so I decided to upgrade him to a larger, 30-gallon, tank. That was nine months ago and he’s been swimming in...