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  1. frothhelmet

    Adding CO2 to hard water = happier fish?

    If you have hard water and use CO2 to decrease pH for fish used to soft/acid water is this an improvement to their environment?
  2. frothhelmet

    Water Softener?

    How do you suppose this water softener works? Hard Water Regions of the UK I have only heard of deionisation and reverse osmosis as water softening methods, and this appears to be neither...
  3. frothhelmet

    Surface Scum

    So in the morning there is no surface scum / bio film / ? on the surface of my tank, so the outlet of the filter breaks the surface and sends water all the way across the surface of the tank. But then as the day wears on, a semi-transparent scum/film forms on the water surface and prevents the...