Hydro Grow LED vs. Horticulture Lighting Group

HydroGrowLED

LED Specialist
Vendor
Those plants are coming along nicely. I love how filled our screen is. What made you decide to throw in an extra 84X? 420W in a 2x4 = 52.5W per square foot. That's a LOT of power my friend lol!
 

Big Perm

Fullmetal Horticulturist
Super Moderator
Those plants are coming along nicely. I love how filled our screen is. What made you decide to throw in an extra 84X? 420W in a 2x4 = 52.5W per square foot. That's a LOT of power my friend lol!
I wanted to light up the canopy as much as I could. Two 84x's wasn't giving me the spread that I was looking for across the canopy. I had an 84x not being used, so I raised them up some and added it. I think it covers quite well. I turned up the Rspec to match.
420w in a 2x4 is smoking, I agree.
 

HydroGrowLED

LED Specialist
Vendor
Yeah, the older X platform just didn't have the coverage that the new XB lights have. The max on each of those lights is a 2x2, with very little light escaping that perimeter, so adding a 3rd unit will certainly make sure everything is BLASTED lol. Back in 2009 when our first Penetrator models were released I had 756W over a 3' x 5' canopy, or about 50W per square foot. X3 is a lot more powerful than the first gen Penetrator lights, so I hope it's not too powerful for them.

I think you already know, but excess light intensity can actually slow down growth and in some cases begin to damage your plants. The Optimal DLI for cannabis is 45-65 moles, which equates to 1040 to 1500µmol/m²/sec if you're running lights 12 hours a day. As long as you don't go too far over 1500 you should be fine.
 

Vaporum

Vapor Master
Staff member
Super Moderator
Very nice test @Big Perm. One of the nicest side-by-sides I've ever seen.

What is your opinion thus far on each light and the plant growing beneath it? From your photos it seems the Hydro Grow LED plant is occupying more of the tent and screen than the Horticulture Lighting Group plant. Is this the case or a photo illusion?

I would say bud development looks ever slightly more developed on the Horticulture Lighting Group side, but it does appear that Hydro Grow LED has more bud sites overall. Your take?

All this re-arrangement of 3 letters gets confusing. Is the next LED company going to call themselves GLH or GHL? :rolleyes:
 

Big Perm

Fullmetal Horticulturist
Super Moderator
Looking great Perm! I may follow suit and go to 2x4’s, the 4x4’s are a pita sometimes.
How long did you veg these plants and what strain?
I like two 2x4 over my 4x4's a lot better. I picked them up off the ground, and now do everything sitting on a stool or standing. The canopy is about chest height. A lot easier to manage. Plus if something goes wrong, you might only lose half of your crop. Also can be more gentle on electricity, if you flip flop 12/12. Reaching across the canopy to the back is no big deal.
I started this comparison July 4th ('merica). So they spent 48 days in veg in the comparison.
I flipped to 12/12 on 8/11
Before that they were twin clones and I don't know how old they were. Probably a month old. They are Seedsman Zkittlez.
I don't know if it's the angle of the photos or what, but damn that Hydro Grow LED plant looks frosty.
They both have some nice frost, but yeah Hydro Grow LED has about twice as much of it. They are frosting up nice!
 

Big Perm

Fullmetal Horticulturist
Super Moderator
Day 30 Bloom
I was able to get a quick pic right after lights out.
Still too early to say who is in the lead, imo (because everything could change late bloom). Both plants are rocking it. IF I had to say which looks better, I would say the Hydro Grow LED. Both tents have always had equal watts from the start. The Hydro Grow LED side obviously has better coverage, but less ppfd. I made some modifications to the 84x.

For the last update, I added a third 84x solely for the purpose of better coverage. That resulted in around 423 watts. That's a lot of watts. Matching the wattage with the Horticulture Lighting Group is insanity as well. So, what do I do? Do I pull out the third light and go back to two, and turn the Horticulture Lighting Group watts back down? I decided to add a fourth light instead, and match wattage to truly make this a Horticulture Lighting Group vs Hydro Grow LED comparison. It's not an Rspec vs 84x comparison, according to the title. Horticulture Lighting Group didn't give me this light to run in a comparison grow. I bought the 84x's. So, since these are both my lights. I am going to put up Horticulture Lighting Group against Hydro Grow LED. Here is how I am accomplishing that.

If anyone remembers Project Alpha, where I modified that light, this is the same thing with a couple of things done differently.

Why did I do this?

Not only because it could be done, but because I am wanting to stay around 300 watts in my 2x4's. Two 84x's don't give me the coverage I would like. I did a grow with an unmodified 84x, and really liked the results. So, I modded these lights to run each PCB at half power. Since each PCB is running at roughly 16.25 watts now, I don't need to cool them with the fans, that's more watts I can put into the lights. The 84x now draws 65 watts at the wall.

What this means is my coverage issue is gone. I had three unmodified 84x's in a 2x4. The coverage was better than two obviously, and four would be even better coverage. Three 84x's pull about 423 watts, and four of them pull about 565 watts.

What if you could have the coverage of four lights, with the wattage of only two?

I think this is the perfect mod for this light to be able to have the coverage I would like in a 2x4.

So what about Horticulture Lighting Group? I have already talked with Steve about remote mounting the Mean Well and he said I could mount it up to four feet away. I will do that as well as cut the Rspec in half. This will give me two sets of two boards that I can then layout in the 2x4 for better coverage as well. I will be performing that mod in the immediate future.

Hydro Grow LED
IMG_20190920_073143.jpg


Horticulture Lighting Group
IMG_20190920_073304.jpg


Mods are being made on the fly in this grow. Each mod is for the better, and I still feel that it is a fair grow given this fact. I will immediately be modifying the Rspec for more coverage. It will easily peg the scale on the par meter at 2000+ umol, but at the edges of the 2x4 I'm getting readings of 300umol. This light needs to be split up to unlock its lack in coverage for my situation and grow style, imo.

This isn't the 'end all be all' grow between these two companies, either. I will be doing numerous side by sides with each of the lights I have. One thing I have learned in this grow is that these lights are two different animals. If you treat them the same, you are not going to get the same results. Grower input is needed. The Rspec throws out WAY more umol, but on a much smaller footprint. I think 900-1200 umol is what is recommended for bloom. The Rspec is hitting that without even trying, just not uniformly. The 84x's are hitting 900-1000 trying as hard as they can under this mod, but with WAY more coverage and WAY less watts (than before the mod).
 

Vaporum

Vapor Master
Staff member
Super Moderator
I don't know man. The two plants you posted seem to be around the same stage in bud development, but that first plant is noticeably larger in the photos unless there is some optical illusion work being done. I'm really digging how you modded those 84X lights for your area. Are both lights being run around the same max PPFD?
 
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