so it take 3 kids,
bliss rb and drek to post 1 pic...?
impressive
Well, yeah, but they've certainly done their best to straighten out the error of our ways.
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MH vs HPS for yield?
- Thread starter Bio boy
- Start date
Well, yeah, but they've certainly done their best to straighten out the error of our ways.
D
Drek
Rives, what exactly is your avatar? Is that your dog laying upside down?
You know what they say, can't judge a book by it's cover.
Looks good Bliss.
Thanks man, this strain really digs that Red spectrum, but she would probably like the Horti-Blue or a CMH too, who knows.
What is the highest wattage CMH bulb these days, will they ever make a 1000 watt?
860w, vertical operation only.
D
Drek
It's about 10 posts above this one.
Rated wattage means very little. It only quantifies the amount of power the bulb(load) is using. If I ate 1000lbs a day of steak, it wouldn't tell you anything about my metabolism. It only tells you I'm eating 1000 pounds of steak.
Some people burn off calories efficiently, others not so much.
What we're more concerned about (or should be), is how much of that steak is being burnt off, converted to muscle and applied at the race track.
The percentage of power applied to power used, is roughly only 30% in HPS applications. All that 1000w that you thought was making big buds is actually heating your house.
My buddy is running 6-1000 watt HPS lights in his grow; he has been for years(he's licensed). He doesn't know about CMH really, I mentioned it to him a few weeks ago. His power bills are massive(in combination with everything else, we're talking a lot of money) and he's concerned about his power costs. I plan on showing him that with 10-315w CMH lamps he can not only match or increase his yield but be able to cut his his electrical costs in half. Seriously.
That's pretty cool.
edit: If you used a lamp that was very efficient at converting power to useable light (such as the CMH 860), then overall wattage in, would make a difference.
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Just pulled this out of my drying net, took over 10 zips from this plant.
She was flowered under that Nasty Orange bulb with the "wrong" PAR rating, Hortilux Super HPS
View Image
nice looking nug,
hps really doesn't have as much to do with it as some may think
I'm sure you already kno
nice and frosty for sure.
Jimmy Luffnan
Member
Hi guys,
Im so pumped that I found this thread *cheers*
I have been wanting to run Solis tek 1000w MH 4K for an entire grow for a long time (on my to do list)
It worked out fantastic for the transitional period in reducing stretch, but followed directions and went onto 2K thereafter.
Despite the ST HPS 1000w 2k putting out 1.90 umol per watt, I was surprised that it's 4K counterpart puts out 1.50 umol per watt... with 6K and 10K coming in a close third at 1.45 umol per watt.
I currently run Gavita's, potency and yield is impressive, but you cant have enough quality
Gnome, you have confirmed my speculation that this 4K range makes up that wonderful MH resin production with much less yield loss than the 6-6.5K range of usual.
Im going to kick off the bulb next week
Cheers Jimmy.
Im so pumped that I found this thread *cheers*
I have been wanting to run Solis tek 1000w MH 4K for an entire grow for a long time (on my to do list)
It worked out fantastic for the transitional period in reducing stretch, but followed directions and went onto 2K thereafter.
Despite the ST HPS 1000w 2k putting out 1.90 umol per watt, I was surprised that it's 4K counterpart puts out 1.50 umol per watt... with 6K and 10K coming in a close third at 1.45 umol per watt.
I currently run Gavita's, potency and yield is impressive, but you cant have enough quality
Gnome, you have confirmed my speculation that this 4K range makes up that wonderful MH resin production with much less yield loss than the 6-6.5K range of usual.
Im going to kick off the bulb next week
Cheers Jimmy.
D
Drek
Yep. A well balanced spectrum. I'm hypothesizing that 4k halide is a near approximation of actual 6k sunlight. 3-4k halide gives off a nice overall balance of high and low energy photons, for a well rounded spectral PPFD.
The way I've come to see it, is I want wide-band above and below soil. As long as that's taken care of, the plant will decide on what it wants to use and when, promoting good overall health and all the benefits that come with it.
CMH is more efficient at providing that spectrum at a higher cost and less availability(in the 1kw range).
http://www.youtube.com/watch?v=B1HLEmQI6WI got to love plasma look at par reading from a 300 watt plasma then look at the par reading on a 400 mh lol http://www.youtube.com/watch?v=YTnAVvGMLFs
Plant chlorophyll absorbs light at wavelengths of 400 to 700 nm. This is termed Photosynthetically Active Radiation (PAR)"
Plant chlorophyll absorbs light at wavelengths of 400 to 700 nm. This is termed Photosynthetically Active Radiation (PAR)"
D
Drek
We know what PAR is Doc, but thanks for letting us know anyway.
I think that Doc is finally educating himself as to why anyone could possibly want to use anything besides HPS, and wants to share his newfound knowledge. It's a good thing.
HPS verses CMH (2011 experiments)
JointOperation
Active member
if done in the same room .. it really doesnt show us whats doing what..
doc don't sweat the little details rives,
different meters, distances... pft!
with plasma, why use such low tech gear like a tape measure to gauge distance from the meter from the plasma bulb??
as scientifically shown you merely place it *where needed* to to get the *results wanted*
doc's comparisons reminds me of the side x side cleanser comparisons on tv growing up,
2 identical dirt spots
deluxe brand plasma cleaner on the left
and the other brand, halide 400 cleaner on the right...
start scrubbing!!!
see how clean the deluxe plasma side is!
now look how dirty the halide 400 side still is
I bet he uses deluxe brand dish soap, tile cleaner, and poopoo paper
Hi guys,
Despite the ST HPS 1000w 2k putting out 1.90 umol per watt, I was surprised that it's 4K counterpart puts out 1.50 umol per watt... with 6K and 10K coming in a close third at 1.45 umol per watt.
Gnome, you have confirmed my speculation that this 4K range makes up that wonderful MH resin production with much less yield loss than the 6-6.5K range of usual.
Im going to kick off the bulb next week
Cheers Jimmy.
good to see you giving it a go.
the 4000K Mh puts out a well rounded spectrum for indoors cannabis production, as good as HPS and definitely is counter to years of "it won't work" hype.
CMH is tempting me more and more
especially looking at the results from others.
cost is just 1 of many considerations for me.
i like talking the $20 bulb aspect because 1st of all it works!
compared to a $100 hps bulb and the results speak for themselves.
and that grabs peoples attention and makes then start to think out of the box.
next time i need to replace a few halides I'll give the CMH 850s a run and see what shakes out.
D
Drek
Thanks for that!
My thoughts; quality of light is a significant factor in plant health.I read an interesting article one time. Can't remember where, but it was from someone who had some relevant university training. He stated how he felt a lot of people mistook the various nutrients that we give plants as food, when in fact the nutrients aren't the food per say, but more so vitamins; Light is the food.
I thought that was very interesting. We all know what happens to overall health without a well balanced diet.
Might want to hop on that ebay deal I posted up in the CMH thread. Six 860's for the price of 1-1/2. I doubt they'll have inferior performance to your current selection, which is obviously quite good. Put 1 in your array, see how it goes. The worst thing that happens is you're out $150.
If I could practically go vert in my circumstances, I'd be all over it.
After the rough handling of my 330's by USPS, I'd caution everybody to inspect & then test each bulb for 30 min or so, just to be sure...
D
Drek
I'll be looking forward to that.
You know what would be interesting Gnome, would be to include a couple of these babies; 1 on each type of bulb, and keep track of total power usage throughout the test.http://www.ebay.com/itm/2PCS-US-Plu...354?pt=LH_DefaultDomain_0&hash=item417b1b90d2
