Turnover/Flow rate???????

Discussion in 'General Reef Topics' started by Taylor, Jul 11, 2011.

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  1. Taylor

    Taylor Astrea Snail

    Joined:
    May 13, 2011
    Messages:
    34
    Location:
    From France currently in New York
    I recently decided to change my 39g fowlr to a reef...Right now, I barely have any flow, and I was wondering if 2-800gph powerheads would be an overkill...? so the total of my system would be around 1850 gph. I plan on keeping SPS, nems, and some softies. Also, just so I dont have to start a new thread...Im going to be purchasing a MH system with a 250w bulb. How far from the tank should I have it? I was thinking 8-9 inches...I dont have a chiller, and I dont want to heat my tank, so what do you think would be appropriate?
     
    Taylor, Jul 11, 2011
    Taylor, Jul 11, 2011
    #1

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  2. Seano Hermano

    Seano Hermano Giant Squid

    Joined:
    Apr 7, 2010
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    10,056
    Location:
    Northwest Ohio
    I think the flow rate you currently have should be good for SPS, considering the volume of water which is probably displaced by rock. You could add more flow if you want, but it won't be necessary.

    I would have the MH about a foot above the tank if you don't want it to heat the water.
     
    Seano Hermano, Jul 11, 2011
    Seano Hermano, Jul 11, 2011
    #2
  3. Taylor

    Taylor Astrea Snail

    Joined:
    May 13, 2011
    Messages:
    34
    Location:
    From France currently in New York
    Where should I place the 2 power heads?
     
    Taylor, Jul 11, 2011
    Taylor, Jul 11, 2011
    #3
  4. 2in10

    2in10 Super Moderator

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    Place the powerheads on opposite sides of the tank pointing parallel to each other.
     
    2in10, Jul 11, 2011
    2in10, Jul 11, 2011
    #4
  5. coraladdict

    coraladdict Plankton

    Joined:
    Jun 22, 2010
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    13
    Location:
    Kentucky
    I have two 175W MH lights about 18 inches above my 75 gallon tank and I have to run a fan in the canopy to keep it from heating the water too much. The fan is cheap and works fine for me...
     
    coraladdict, Jul 11, 2011
    coraladdict, Jul 11, 2011
    #5