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 msmr5150
Registered: 01/08/09
Posts: 71
Last seen: 14 years, 4 months
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 mh yeild vs. hps? 
#217497 - 04/19/09 03:12 PM (15 years, 8 months ago) |
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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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ethnoguy
E to the G
 
Registered: 04/21/08
Posts: 429
Loc: your momma's house
Last seen: 15 years, 4 months
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Re: mh yeild vs. hps? [Re: msmr5150]
#217709 - 04/19/09 08:53 PM (15 years, 8 months ago) |
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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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 Dr. Penguin
Registered: 05/19/08
Posts: 1,036
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Re: mh yeild vs. hps? [Re: ethnoguy]
#217724 - 04/19/09 10:21 PM (15 years, 8 months ago) |
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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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ethnoguy
E to the G
Registered: 04/21/08
Posts: 429
Loc: your momma's house
Last seen: 15 years, 4 months
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Re: mh yeild vs. hps? [Re: Dr. Penguin]
#217795 - 04/20/09 01:28 AM (15 years, 8 months ago) |
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What I have read says that HPS is best for flowering. I haven't read to the contrary.
EG
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Dr. Penguin
Registered: 05/19/08
Posts: 1,036
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Re: mh yeild vs. hps? [Re: ethnoguy]
#217835 - 04/20/09 06:17 AM (15 years, 8 months ago) |
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You are absolutely correct, HPS is best for flowering, but that isn't to say MH is poor at it.
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ethnoguy
E to the G
Registered: 04/21/08
Posts: 429
Loc: your momma's house
Last seen: 15 years, 4 months
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Re: mh yeild vs. hps? [Re: Dr. Penguin]
#217861 - 04/20/09 09:19 AM (15 years, 8 months ago) |
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I hear ya. I have always assumed that MH yields compared to HPS yields are not near as good. 
EG
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Harry_Ba11sach
cannoisseur
Registered: 04/20/08
Posts: 11,753
Loc: Nepal 
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Re: mh yeild vs. hps? [Re: ethnoguy]
#218761 - 04/22/09 08:26 PM (15 years, 8 months ago) |
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I know from experience HPS is a little lacking for veg all my plants under HPS came out more scragly and stretched than T5
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ethnoguy
E to the G
Registered: 04/21/08
Posts: 429
Loc: your momma's house
Last seen: 15 years, 4 months
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Thats interesting. Hmm. Now I am starting to rethink my veg area.
EG
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Harry_Ba11sach
cannoisseur
Registered: 04/20/08
Posts: 11,753
Loc: Nepal
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Re: mh yeild vs. hps? [Re: ethnoguy]
#218823 - 04/22/09 10:04 PM (15 years, 8 months ago) |
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but I was also using a 250W, so it may have just been a little underpowered in general
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Dr. Penguin
Registered: 05/19/08
Posts: 1,036
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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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