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Thread: photoperiod for SPS

  1. #1
    Join Date
    11-16-2008
    Location
    San Antonio
    Posts
    127

    Default photoperiod for SPS

    What do people run for photoperiod? Just read an interesting thread on RC regarding improved SPS growth and color with reduced photoperiod, like 5-6 hrs MH and 8-9 hrs actinics. I run T5s, 10hr all on, 12hr actinics and it seems my SPS color is a bit muted. Growth is OK. Thinking about cutting back my photoperiod and seeing what happens.

  2. #2
    Join Date
    02-19-2009
    Location
    Austin, Texas
    Posts
    272

    Default

    I've cut back my MH photo period from 7 hours to 5 hours and leaving my actincs on for 10 hours. In the time since I started, I've noticed more growth than usual, and the colors in one of the pieces that has been browned out are coming back at a rapid rate. I highly suggest cutting it back. Worked for me and a bunch of others!

  3. #3
    Join Date
    01-30-2006
    Location
    San Antonio, Texas
    Posts
    1,030

    Default

    When I was using the T5's I had my blue plus bulbs on for 12 hours and the daylight bulbs for 8 hrs. Growth was phenomenal with the T5's! My new halides are on 8 hrs a day.
    Last edited by lt1z28; Mon, 27th Apr 2009 at 10:48 AM.

  4. #4
    Join Date
    11-17-2007
    Location
    Pflugerville
    Posts
    216

    Default

    Running T5's actinic 7 hours all others 5 hours. Good growth and good color.

    It1z28 why did you switch from T5 back to MH?
    Cecil
    185, 3 k4's, wavebox, 10 bulb ATI Powermodule, MSX200

  5. #5

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    6 hours MH, 12 hours VHO

  6. #6

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    12 hr actinics rest is 10 hours, good color and growth.

  7. #7
    Join Date
    09-22-2008
    Location
    Helotes TX
    Posts
    825

    Default

    t5 tek fixture 6 bulb
    10 hr actinic
    rest for 8 hours

    good growth and tons of color.

  8. #8
    Join Date
    01-30-2006
    Location
    San Antonio, Texas
    Posts
    1,030

    Default

    Quote Originally Posted by chark View Post
    Running T5's actinic 7 hours all others 5 hours. Good growth and good color.

    It1z28 why did you switch from T5 back to MH?
    I like the natural look of metal halides.

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