cycle question

Discussion in 'Water Chemistry' started by JayTropical, May 24, 2010.

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  1. ingtar_shinowa

    ingtar_shinowa Giant Squid

    Joined:
    Jun 13, 2009
    Messages:
    7,072
    Location:
    Billings Montana
    not to hyjack, but inwall what is the benefit of sponges? I took the ones in my skimmer and return pump out because i figured they were just gonna foul my water quality. I always thought its just for nominial mechanical filtering and biological filtering.