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Thread: HPS Questions

  1. #11

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    Quote Originally Posted by MrCannab1sir View Post
    What kind of heat from the light alone could I expect to see in a 2.5 W x 3 L x 7 H ft chilly groom? I understand it's like showing a seedling and asking for a yield prediction but just some idea of what your temps are like off hps could give me an idea which is more than I have now

    How powerful of a bulb will I need for 4 autos? Was looking at 600w with a lummi black digital ballast and sunmaster dual spec bulb has been mentioned a cple times.

    Is a parobolic reflector the best option if I don't need a cooltube to keep heat down?

    It's hps or using the 1x 300w blue, red and dual bulbs plus a 125w dual spec on a homemade chandelier, so 4 multi directional cfl bulbs in total

    Also as I'm using a 150 IS board for photos I suppose I better factor electricity in


    I'm sure all this has been discussed somehwere, it's hard to find specific answers sometimes and opinions always change. Just trying to get ready for the next run with a more permanent setup
    Its a 600w full hps light a was using. With a 150L extraction fan. Only passive intake. Temps were a little higher than ad liked. But decent enough. Am gonny put in my 4" rvk for intake once a can be arsed startin a grow. That should sweeten the temps a bit.


    Sent from my SM-G930F using Tapatalk

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  3. #12

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    Quote Originally Posted by RASTA View Post
    Its a 600w full hps light a was using. With a 150L extraction fan. Only passive intake. Temps were a little higher than ad liked. But decent enough. Am gonny put in my 4" rvk for intake once a can be arsed startin a grow. That should sweeten the temps a bit.


    Sent from my SM-G930F using Tapatalk
    Ah ok man sweet, should be ok. It'll be cold in the room tents in til april may and even in summer its cool even on the hottest days, pretty lucky really in that respect tbf. Easier to warm space up than cool it down

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  5. #13

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    What do you do with the ballast? Suspend it in the air on ratchet hangers? Thats how the LED dimmer/ballast thing is in my tent, just suspended with ropes.

    And you can run led and hps together right, depending on temp ?

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  7. #14

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    My ballast sits on the floor....
    It's Not What You Know, It's What You Can Prove

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  9. #15

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    Quote Originally Posted by M_C View Post
    My ballast sits on the floor....
    Oh ok, thought they got too hot to touch

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  11. #16

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    My digital ballast never get above room temp

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  13. #17

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    Nice, I'll plug it in and have a butchers. Does it need to be turned off to switch between 250-400-600w?

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  15. #18

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    A good question... I don't know... but it would be good practice IMHO....

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  17. #19

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    Quote Originally Posted by M_C View Post
    A good question... I don't know... but it would be good practice IMHO....
    Yeh too right, I don't wanna be the one to find out

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    I've got a fastbuds at 7.5 wks old, well into flower. Do you reckon it would create a big risk of nanas showing up if I added hps to the 150w IS led, if heat allowed that is.

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