how to know when tank lacks oxygen?

Discussion in 'New To The Hobby' started by Mkizla, Dec 14, 2009.

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  1. skiergd011013

    skiergd011013 Peppermint Shrimp

    Joined:
    Nov 5, 2009
    Messages:
    449
    fish will gasp at the surface for air. use a powerhead to create surface agitation for gas exchange.
     
    skiergd011013, Dec 20, 2009
    skiergd011013, Dec 20, 2009
    #11
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