Is my Flow to high ????

Discussion in 'Pumps and Waterflow' started by williet, 6 Jan 2011.

  1. williet

    williet Look at the shiny LEDs!!!

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    Hi all

    I have been running a tank for almost two months now. I have a question. I got some Soft coral and LPS and I am currently concerned I have to much flow as my ricordeas and mushrooms need to be almost placed in a corner right at the bottom with NO FLOW to get them to open up (Have achieved this at the cost of them being exposed to less lighting.)[​IMG]

    I have my return flow bouncing against the back glass and my power heads are pointing at +- between a 10 and 20 degree gradient. The are also the double barrel sunsun pumps. One is a JV 202 and the other is a JV 201 (Not sure)
    [​IMG]

    Please see attached picture any suggestions will be most appreciated !!!
     
    Last edited: 6 Jan 2011
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  3. Tobes

    Tobes Retired Moderator

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    You don't say how big the tank is? What LPS do you have?
     
  4. dallasg

    dallasg Moderator MASA Contributor

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    your flow is dependent on the corals kept... some like high flow, some don't, research the corals u keep and place them accordingly, make a high flow area and a lower flow area etc
     
  5. williet

    williet Thread Starter Look at the shiny LEDs!!!

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    Oooppsss I have a 4ft Tank 1210X410X510

    I have some favia,acans, zoas, pineapple coral, mushroom, Leather Cabbage, Palythoas, and a Brain Coral (Favia kind)
     
  6. dallasg

    dallasg Moderator MASA Contributor

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  7. williet

    williet Thread Starter Look at the shiny LEDs!!!

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    So overall is my flow not to high ? I do have sand being pushed around a bit ?
     
  8. dallasg

    dallasg Moderator MASA Contributor

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    just aim them higher towards the surface, or bounce the flow off the sides etc
     
  9. butcherman

    butcherman Moderator MASA Contributor

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    out of interest what lights are you running?
     
  10. williet

    williet Thread Starter Look at the shiny LEDs!!!

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    Thanks Guys !!!

    Butcherman I know what you are going to say, but at the moment I have two t5's One actinic blue and a 10000K White. (My ballast should be here by friday complements of Leslie Hempel). Interesting thing, If I put the higher up the seem to close up more ! I also noticed this with my Favia. It does not like much light! I keep it close to the ground and it seems happy ????
     
  11. mariusmeyer

    mariusmeyer

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    I would say that the 12000LPH is causing the issues. I would rather replace it with 2 5000LPH pumps. With more smaller pumps you can fine tune the flow and create different flow areas more easily.
     
  12. Tobes

    Tobes Retired Moderator

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    I also think the one 12000 is causing too much flow in one direction. If it does not help to point it upwards, replace with two smaller pumps.
    LPS require medium flow and medium light as they are deeper in the ocean - too high flow will tear the flesh off the skeleton.
     
  13. butcherman

    butcherman Moderator MASA Contributor

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    I have a quick fix ;) remove one of the 12000lph impellors giving you and instant 6000lph and you can test it :thumbup:
     
  14. williet

    williet Thread Starter Look at the shiny LEDs!!!

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    hey guys

    Love the suggestions ! I am going to try the tonight !!!
     
  15. mariusmeyer

    mariusmeyer

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    Removing the one impeller will help reduce the flow, but I have never succeeded in getting nice random flow throughout the entire tank with just 2 normal flow pumps.
     
  16. butcherman

    butcherman Moderator MASA Contributor

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    agreed but its a good stop gap :)
     
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