Nitrates cause gray hair

Discussion in 'Refugium' started by Raimond, Jul 27, 2010.

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  1. Raimond

    Raimond Bristle Worm

    Joined:
    Jul 25, 2010
    Messages:
    125
    Location:
    Southern California Desert
    As I suspected, the nitrates are above 30 again at the end of the off period. May have to increase the on time for the refugium...