Mh versus hps
- Thread starter P3D1977
- Start date
Chronic Masterbator
Well-Known Member
Agrees with this ^^^ guy!! Hps gives a higher spectrum of light. Even if its the same wattage. However using a MH lamp whilst in flowering it helps to keep the ladies squat.
HeartlandHank
Well-Known Member
Uncle Ben thoroughly tested lighting, spectrum, hoods... search for his findings if you wish.
If I remember correctly, HPS beat out MH, even in veg. Not sure if he mixed the two or not.
If I remember correctly, HPS beat out MH, even in veg. Not sure if he mixed the two or not.
thanks m8, cant afford to much squat as I have limited space.
thanks man
Sand4x105
Well-Known Member
SQUAT??? I use a couple of MH along with HPS in my flower room.... and I find exactly the opposite to be true... So.... IDK...
Is this opinion, based on something you have done or are you repeating something you have heard? Because in my "Real World" combo spectrum MH/HPS the twin clone which spends more time under MH will stretch more for me, or the opposite of a squat plant.... MH leads to stretch in my grow... a little more than HPS.... This is not something I have read, it is what happens in my grow room... Not saying CM is wrong, it is just what happens in different grow environments... Good Luck....
Jack Harer
Well-Known Member
I've run full grows using just HPS and using just MH. I grew 72 plants in 8" pots on a 4x8 table with 2 1K lights. IF there was a difference in yield, it would be measured in a couple grams or less. Having said that, the dual spectrum is the ideal but I found that the Dual Spectrum bulbs significantly lacked the lumens output of thier HPS or MH counterparts. So If I had to choose between using only MH or HPS I'd go with MH simply because its easier on my eyes.
JonnyAppleSeed420
New Member
Do your own research and you will be better off! If your going to get bias information it might as well be your own. Its plain and simple if you read the spectrums...Halides for veg. and Hps for flower. Proven track record that has yet to be beaten by any combo. JAS
bird mcbride
Well-Known Member
Myself personally have no use for a MH. Unless it's a mercury vapour metal halide and I turn these on my moms 18/6 a few days before I cut a bunch of snips. I find the MVMH helps to elongate the shoots and make for better clones. Of couse you have to increase the watering when you do this. Otherwise It's daylight tubes for the moms, 24/0, and cool white tubes 24/0 for the clones in the bin. If I were going to try something other than hps for budding I'd give ceramic metal halide a go.
Steelheader3430
Well-Known Member
Lots of varying opinions and results with this question. I got a 1000 watt mh for free so thats what I'm using all the way through, and it works great. I would like to have an hps but the mh is working fine.
bird mcbride
Well-Known Member
I say go for it! You'll get some good bud outta the deal. I've resorted to MH and I had no regrets. I grew 10-33g cola nubs using two 1kw mercury vapor MH's and going with 1kw of halegon over a 4' x 4' x 6" flood and drain table totaling 3000 watts for one table. Do with what you got!
HeartlandHank
Well-Known Member
Why did you change your name to JAS? Why not just use the same handle that you have for the past several years... Sir Ganja?
Personally, I don't really care.. I'm setup for T8s for veg and hps for flower, and not changing it. I don't care what is "best". Bias does not even apply in that situation. My reasons for using T8 and HPS have nothing to do with any tests, info collected from a contributor to herb forums or ratings from a manufacturer/marketing.
The OP asked a question, someone (UB) out there did the tests... so I thought I would connect the dots.. no?
Your career here on RIU JAS aka (formerly known as) Sir Ganja has shown that you disagree with anything UB says.
Let's look at the definition of bias.
bi·as
ˈbīəs/
noun
noun: bias; plural noun: biases
1.
prejudice in favor of or against one thing, person, or group compared with another, usually in a way considered to be unfair.
"there was evidence of bias against foreign applicants"
racerboy71
bud bootlegger
i use sunpulse mh's for flowering.. they're much like cfl's, as they come in varying k ratings, from i think 3k all the way up to 10k, which they recommend for the last 2 weeks of flowering..
so using the sunpulses. there's not much of a difference in spectrum as compared to normal hps bulbs imo.. i use the 6k for veg and the 3k i think it is for flowering..
HeartlandHank
Well-Known Member
Hey Sir Ganja... why not try to contribute around here on RIU instead of just being a troll..
I bet the OP would find a link to that proof very helpful. Contribution, Sir Ganja, give it a try.
Jack Harer
Well-Known Member
Uncle Ben, myself, and several others here have all run that test, many during my tenure here. We all pretty much agree on the results we posted. Yes, forever and a day the school of thought has been veg with MH and flower with HPS. The spectrums of the bulbs are closer to the natural light the plants would get in nature during the respective phases, no argument there. A NEW school of thought has emerged saying that a mixed spectrum is best for both. I just aint a fan of conversion/dual-spectrum bulbs.
But I and many others are here to tell you that you can achieve STELLAR results with either one. I have found that one can continually fine tune and tweak things to chase that extra few grams, but 99% of all newbies start out on a budget, and I for one am here giving advise (Learning all the way...) that will give them good results with a good chance of success. I'll tell someone HOW to use Miracl-Gro right. I hate the shit, but I cant argue the fact that great weed can be grown with it. Too much proof too the contrary. Any grower here who has learned things here has a duty to at least help out anyone asking a question, and give them the benefit of OUR EXPERIENCE, not repeat what we've been told.
Dude use the HPS or dual spectrum bulb. You'll be FINE.
But I and many others are here to tell you that you can achieve STELLAR results with either one. I have found that one can continually fine tune and tweak things to chase that extra few grams, but 99% of all newbies start out on a budget, and I for one am here giving advise (Learning all the way...) that will give them good results with a good chance of success. I'll tell someone HOW to use Miracl-Gro right. I hate the shit, but I cant argue the fact that great weed can be grown with it. Too much proof too the contrary. Any grower here who has learned things here has a duty to at least help out anyone asking a question, and give them the benefit of OUR EXPERIENCE, not repeat what we've been told.
Dude use the HPS or dual spectrum bulb. You'll be FINE.