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general hardness

  1. Betta Fish Bowls, Habitats, and Accessories
    My 20 gallon aquarium was looking cloudy and I woke up this morning to find one dead rasbora fish that we just bought the night before! So I testing the water with test strips, which read Nitrite and Nitrate 0, ammonia 0, pH7, GH 300+ppm and can't remember the KH anyway so we were gonna go to...