30g reef water flow

Discussion in 'General Reef Topics' started by Andra2000, May 15, 2012.

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  1. Andra2000

    Andra2000 Plankton

    Joined:
    May 15, 2012
    Messages:
    1
    Hello. I have my 30g reef with:
    Filter - 180gph
    Circulation pump - 500gph
    Powerhead to skimmer - 120gph (not counting because it's split into slimmer and other part to the tank)
    = 680gph : best case turns the tank over 22 times per hour

    Just purchased another circulation pump on eBay rated at 800gph. Is that too much for my tank? That would make it 1480gph : just under 50 times over per hour?

    I have soft corals (mushrooms, zoos, star polyps and tree corals) with a couple damsel, 6 line wrasse and Condy anemone.
     
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  3. steve wright

    steve wright Super Moderator

    Joined:
    Feb 17, 2009
    Messages:
    11,284
    Location:
    shenzhen Guangdong PRC
    Welcome to 3 reef Andra2000

    22 x per hour in a soft coral dominated tank is not that bad IME

    50 x per hour may be acceptable , but with so much of it coming from 1 new power head
    you may struggle to avoid focal flow spots in which none of your present corals are 100% happy

    my advice would be to experiment with various combinations of what you have until you find a format that works

    be prepared to aim the power head at the glass etc in order to deflect it before the flow goes out across the tank

    also do not react to any initial coral closures, they may close down just because of the increase in flow and thus conditional changes
    they can and often do acclimatize
    so anything you try, stick with it for 24 - 48 hours before deciding it is not working for you

    a sand bed blowing about being the exception - if that happens, you know it is not suitable as soon as it starts

    Steve