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Amazon Shop for: HPS

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Offlinemsmr5150
Registered: 01/08/09
Posts: 71
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mh yeild vs. hps?
    #217497 - 04/19/09 05:12 PM (7 years, 7 months ago)

i know that hps yeilds more but with a 400 watt light how much less do you think it would be?


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Offlineethnoguy
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Registered: 04/22/08
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Re: mh yeild vs. hps? [Re: msmr5150]
    #217709 - 04/19/09 10:53 PM (7 years, 7 months ago)

MH has the wrong spectrum for flowering. I don't know if anyone here has bothered trying. Get an HPS if you can.

EG


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InvisibleDr. Penguin
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Registered: 05/19/08
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Re: mh yeild vs. hps? [Re: ethnoguy]
    #217724 - 04/20/09 12:21 AM (7 years, 7 months ago)

MH can very well provide the correct spectrum to flower cannabis. Many growers around the world swear by the MH light and use it exclusively to great effect.

As I have never run a side by side comparison I cannot say for sure, but I believe there will be very slight, if any,  difference in yield between a MH and a HPS light. Some of the best grows I have ever seen have been cultivated under MH.


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Offlineethnoguy
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Re: mh yeild vs. hps? [Re: Dr. Penguin]
    #217795 - 04/20/09 03:28 AM (7 years, 7 months ago)

What I have read says that HPS is best for flowering. I haven't read to the contrary.

EG


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InvisibleDr. Penguin
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Re: mh yeild vs. hps? [Re: ethnoguy]
    #217835 - 04/20/09 08:17 AM (7 years, 7 months ago)

You are absolutely correct, HPS is best for flowering, but that isn't to say MH is poor at it.


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* Easy Butane Extraction

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Offlineethnoguy
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Re: mh yeild vs. hps? [Re: Dr. Penguin]
    #217861 - 04/20/09 11:19 AM (7 years, 7 months ago)

I hear ya. I have always assumed that MH yields compared to HPS yields are not near as good. :shrug:

EG


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InvisibleHarry_Ba11sachM
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Re: mh yeild vs. hps? [Re: ethnoguy]
    #218761 - 04/22/09 10:26 PM (7 years, 7 months ago)

I know from experience HPS is a little lacking for veg :shrug: all my plants under HPS came out more scragly and stretched than T5


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Offlineethnoguy
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Re: mh yeild vs. hps? [Re: Harry_Ba11sach]
    #218776 - 04/22/09 10:43 PM (7 years, 7 months ago)

Thats interesting. Hmm. Now I am starting to rethink my veg area.

EG


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InvisibleHarry_Ba11sachM
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Re: mh yeild vs. hps? [Re: ethnoguy]
    #218823 - 04/23/09 12:04 AM (7 years, 7 months ago)

but I was also using a 250W, so it may have just been a little underpowered in general


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Re: mh yeild vs. hps? [Re: Harry_Ba11sach]
    #218898 - 04/23/09 10:12 AM (7 years, 7 months ago)

It is much more likely that they came out scraggly due to lack of lumens than due to the fact that you used an HPS. I use hps to veg all the time and when I post the rest of my scrog pics, I'll show you  my internodes; zero stretch. In reality I don't think 9/10 people will ever see a difference between HPS and MH.


--------------------
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* How to Build a Grow Tent
* Fan Speed Control 101
* Easy Butane Extraction

Not responsible for advice not taken.


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Amazon Shop for: HPS

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