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2x175 watt

Discussion in 'General Discussion' started by Guest, Jul 27, 2008.

  1. Guest

    Guest Guest

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    is 2-175 watt mh enuf for a 72 bow  or should i up grade to 250 mh i see my red cap is browing out and dont know why
     
  2. BGreenlee

    BGreenlee Inactive User

    673
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    175's would be marginal to maintain color towards the middle to bottom of the tank. I have used them on tanks at 18", but was much happier with the 250w lights when I went to them, both in terms of growth and color.

    Billy
     
  3. Guest

    Guest Guest

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    thanks very much for info
     
  4. billbigsbe Well-Known ReefKeeper

    695
    Clive
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    sell those 175s and get 2 400s, I wish i had 400s rather than 250s
     
  5. Travis

    Travis Well-Known ReefKeeper

    648
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    If the bulbs are fresh, lights are close to the surface, and the coral is in the top half of the tank I would look at your water parameters before blaming the lights. Red cap is not a hard coral to keep colored up with medium light and quality water. I would look at phosphate, alk, and even nitrate levels.
     
  6. einsteins

    einsteins Experienced Reefkeeper

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    Yep..... almost always browning of corals is caused by water parameters like access nutrients or hi PO4.
    Unstable parameters can also attribute to browning of corals.

    eins
     

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