Tropical Fish Keeping banner


  1. Used Tank Has White Stains On Glass

    Beginner Freshwater Aquarium
    I just bought a 75 gallon tank used off of craigslist. When I got home I noticed the aquarium glass was really cloudy. It had white stains on all four sides of the glass. I got my aquarium sponge and some warm water and started cleaning it and it appeared to all come off and be clear, once a...
  2. How to remove calcum deposits?

    Beginner Freshwater Aquarium
    I recently purchased a used 20g tank. The owner previously had a turtle in the tank, so it was filled halfway with water. Everything above that halfway water line has hard calcium deposits. So far I've tried using vinegar (5% acidity) and a razor blade but haven't made much progress. What...