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Thread: mh vs hps

  1. #1

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    Default mh vs hps

    Ok so ive read enoguh about the subject and most people agree mh increases potency and density. So i thought as you cant find a good comparison on thc i would do one as im currently doing it.

    The room is 1.5mx 1.2mx 2.4m so its a nice rectangle which is very tall. I have got 1x 400w mh bulb and 1x 400w duel spectrum hps and both are in cooltubes connected together by good old tape (what else would i use)

    The grow will be a 12/12 grow and im yet to decide which plants to show as i have regs so watch this space and ill be back with pictures of the plants, ill get pictures of the set up tomorrow.


    Any comments and advice, ideas welcome. lets put this to bed which is better mh, hps or the middle where they grow mh and hps, the floor is now open
    Take it easy out there
    mh vs hps lil rasta's experiment https://www.thctalk.com/cannabis-foru...post1069367328
    New diary 2gpw is the target https://www.thctalk.com/cannabis-foru...will-have-2gpw
    Hydro trees may need help 1.536gpw https://www.thctalk.com/cannabis-foru...ouble-doughnut
    12/12 ww x vortex for hillbilly https://www.thctalk.com/cannabis-foru...post1069070774
    Finished 12/12 soil grow 1.365gpw, Hillbillys mt shasta+ dz's trifle:https://www.thctalk.com/cannabis-foru...post1069014713
    Finished multi strain soil grow, 1.225gpw: https://www.thctalk.com/cannabis-foru...rain-1st-diary

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  3. #2
    jimmi420 Guest

    Default

    You still got both going on i think iff i understand correct, are they both in the same room, i dont think it will be a true comparison iff so, you need 2 seperate rooms imo for a true result.

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    Nice i rasta.. very interested in this as you know.. subbed

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    Quote Originally Posted by jimmi420 View Post
    You still got both going on i think iff i understand correct, are they both in the same room, i dont think it will be a true comparison iff so, you need 2 seperate rooms imo for a true result.
    I get what you are saying jimmy but i dont have the room and i dont want to do 2 runs to get a result.

    The bulbs are 2ft apart so i was thinking plants directly under each light and 1 in the middle of the 2, best i can really do

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    Quote Originally Posted by Boycie View Post
    Nice i rasta.. very interested in this as you know.. subbed
    I was going to pm you about it so that saved me the job, ill grab those picrures in the morning to give you a better idea

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    I have only used the dual spec hps but am considering get mh for veg So will be interesting to see the diff...good luck lil rasta

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    Good call, Lil Rasta. I look forward to the results.



    No chance of hanging a piece of white/black/white to separate the two sides and doing four or six instead of five in that space then?

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    Quote Originally Posted by babybud3232 View Post
    I have only used the dual spec hps but am considering get mh for veg So will be interesting to see the diff...good luck lil rasta
    I can already tell you how that will pan out

    For a short veg (under 4 weeks) there isnt any noticeable difference other than tighter nodes no increase or decrease in growth

    For a longer veg (over 4 weeks) The mh whoops the hps ass. Much tighter nodes and faster greener growth, also more lateral growth, not much difference in height as of node spacing increase with the hps


    But stick around and see it happen

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    Quote Originally Posted by Anonymiss View Post
    Good call, Lil Rasta. I look forward to the results.



    No chance of hanging a piece of white/black/white to separate the two sides and doing four or six instead of five in that space then?
    Cheers miss, ill do my best to keep it a fair test.

    hmmm i could do but it would be fiddly and would make watering a pian in the ass when the get past 1ft and i can get it very far, also i want to see what happens in the middle.
    Im unsure on how many but ill have 6 in my next diary for will only show 4 but i also have regs but also

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    It was just a nudge in case you were a bit undecided (or easily swayed)

    I think the way you're doing it will certainly be a good indicator.

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