Ok so Ive done slot of research and found that hps is far superior in flowering over mh. My question is , by how much? Let's say you have a plant that is receiving 10,000 lumens of hps and it produces 4oz of bud. Can someone give an estimate of what the yield would have been had it been grown with a mh lamp producig the same amount of lumens and all other conditions remaining the same? I think this will be a good thread if some of you xperts can throw out some numbers this way us noobs know exactly how much bud we are losing by not using hps for flower thanks!!!
Hps vs mh for flower...yield difference?
- Thread starter Ridonc
- Start date
Joe Hemp
Member
I can't say for certain, but I would estimate that your yields could be cut by as much as 50% depending on the strain but I think 30% on average is a more reasonable guess. MH are the wrong color spectrum and the plant will not use this light as effectively during the flowering stage. I know a lot of people who grow and it's agreed that if you can only afford one or the other and not both, that you should just buy the HPS as the worst it will do is extend your veg time but will give max efficiency during flowering. Hope this helps answer your question.
Cheers
Joe
Cheers
Joe
Shrubs First
Well-Known Member
watch my current grow, flowering with full MH's.. I hate HPS.
If you're matching lumens, you would be using a lot more MH
Watts to equal the same lumens as the HPS, it would take 1000
MH watts to equal a 600W HPS in terms of Lumens. but Lumens
are useless for plants, as they are rated for the human eye, not plant
detection. People use HPS because it puts out the most Lumens, and people have
had the best success with them, but honestly, they really AREN'T the correct
spectrum. They are used as street lights for god sakes. They are
manufactured to produce the most VISIBLE light to the HUMAN EYE.
If you're matching lumens, you would be using a lot more MH
Watts to equal the same lumens as the HPS, it would take 1000
MH watts to equal a 600W HPS in terms of Lumens. but Lumens
are useless for plants, as they are rated for the human eye, not plant
detection. People use HPS because it puts out the most Lumens, and people have
had the best success with them, but honestly, they really AREN'T the correct
spectrum. They are used as street lights for god sakes. They are
manufactured to produce the most VISIBLE light to the HUMAN EYE.
H.R. Shove N Stuff
Active Member
Well for my first grow I only have a MH light. I will be using this light to flower too as I don't have a HPS light yet. I thought by now I would have a HPS light but I don't.
Shrubs First
Well-Known Member
NO, they do not need "orange light" their sensitivity peaks are 680 nanometers, and
again in 700.. This is RED light. HPS peaks at 570 nanometers which is Green/Yellow.
And happens to be the brightest light a human can see. Coincidence?