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  1. C

    Carbon good or bad?

    I am cycling my new tank, and put a carbon bag in the canister filter to absorb any remaining tannins from the driftwood. But the cycle is going very, very slowly. I am wondering if carbon impedes the cycle, absorbs bacteria or the bacterial starter I added, etc. I have read carbon is...
  2. C

    And now a CO2 question

    I know CO2 injection affects Ph, but I wasn't expecting such a swing. When running my CO2 I can drive PH from 7.5 down to 7. Is that normal, or is my water not sufficiently buffered?
  3. C

    Is there an oxygen diffuser?

    Can you run air through a CO2 glass diffuser to get a finer mist of air bubbles into the tank? Even my "fine" air bubble stone still puts out too many big bubbles.
  4. C

    What is good ORP for FW tank?

    Got the Neptune Apex for my new 55gal tank. It is awesome. Monitors Ph, Temp and ORP. But does anyone know what a good ORP range would be for a freshwater planted tank?
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