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high co2

  1. S

    (MTS and nerite) Snails in low KH (and low pH)

    Hi all, For around a year now, I started using RO water in my tank (5KH and 0-0,5KH). I've used CO2 for years now. With 0KH, this gives me a pH of ~5.5 during peak saturation of CO2. With my tap water (300ppm, KH 8, GH unknown), I used to have a pH of ~6.5 during peak saturation of CO2. The...
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