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salt water residue

  1. Another 5 gallon tank!

    Betta Fish Bowls, Habitats, and Accessories
    So my neighbour stopped by the other day with a 5 gallon tank under his arm and gave it to me! He was using it as his Q tank for his saltwater fish, and there's a white film/ crust build up on the inside of the glass. I went to work tonight and asked what I could do (that wouldn't cost me...