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  1. JdE

    High Gh, low Kh: dead ram

    Hi! I have a 30G low-tech planted aquarium with some chemistry problems. The water in my place has a high Gh (10-12) and thus a pH close to 8, but the Kh is low (1-2). After killing some tetras I started mixing RO water with tap water, but I can't figure out how to increase the Kh without going...
  2. JdE

    Nitrate problem?

    I have a 30 gallons well established tank with Eheim 2215 and a good number of plants. I use RO water to keep the pH in range and the total solids low (my water is kind of hard). Lately I got a light green algae on the glass and the tip of some plants seem rotten. I changed lights, increased...
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