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fluctuation

  1. pH fluctuation hardness around 3

    Beginner Freshwater Aquarium
    I'm not particularly worried about this and wouldn't consider it a "problem", but I am curious as to what occurred (or is occurring) to cause this change in pH. First, some background: 43g tank (actual water content), Flourite sand substrate, moderately planted (8 or so Echinodorus sp., a...
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