Haight Solid State vs. H.G.LED

Re: 420 Consumer Reports Competition - Haight Solid State vs. Hydro Grow LED

You have an excellent grasp of the issue Lurker, and I very much appreciate your comments and suggestions.

I had been using a 20" X 20" 40w seedling heat mat in each tent to help keep things warm. The mats were effective at warming the pots (and roots) up, but did nothing noticeable for ambient temps inside the tents. As I raised the ambient temp in the garage up with the space heater, I had to get rid of the mats because they were raising the soil temp to 82F at mid pot, and up to 90F at the bottom, and I like soil temps to be around 72F. I guess I could have used some thermostats on the mats, but on this grow I just decided to raise the ambient temp to solve the problem.

Thanks for the links! I've also found that if you search for doghouse heaters, there are also some other low-wattage solutions for heating grow spaces. The problem then becomes that I think good air exchange is really important for plants, so I don't really want to turn down my exhaust fans to reduce heat loss during lights-out. I'm exchanging the air in my tents about twice a minute and I believe my plants thrive with that, especially since I'm not currently using CO2.

Would an IR-only LED affect the photo-period?

again, thanks for your thoughts and suggestions TL ;)
 
Re: 420 Consumer Reports Competition - Haight Solid State vs. Hydro Grow LED

The Lurker said:
Once you take that issue (i.e. having to vent the heat produced by HIDs away from the garden in order to maintain proper temperatures) out of the equation, one can likely get away with using much lower CFM requirements (for transpiration and CO2 replacement/air exchange alone) for much of the grow.
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Setting Sun said:
I'm exchanging the air in my tents about twice a minute and I believe my plants thrive with that, especially since I'm not currently using CO2.
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Hi Setting Sun, thanks for your thorough analyses. You have a knack.

The air exchange is what i have been thinking about lately due to the low heat output of the LEDs. Specifically, i am wondering if a cabinet environment (e.g. 2'x3'x4' ) can be completely sealed off with an air exchange happening only once a day during maintenance. Assuming adequate CO2, would a sealed environment such as this work, or would other factors be deleterious to the plants' health, like for instance excessive humidity? Would increased O2 levels (from respiration) be harmful?

Anyone can feel free to answer this, i don't have any experience growing so i have got no idea. Lack of air exchange would really make it easy to keep CO2 levels at around the 1500ppm levels, especially if one is using off-gassing pucks. Additionally, the lack of an automatic blower would be great for the stealthiness factor. I am thinking a person could install a blower with a carbon filter, leave it manually switched so he or she could turn it on just before opening the cabinet if odor is of concern. There could be a removable cover on the air intake vents at the bottom to keep the growing environment sealed for most of the day.
 
Re: 420 Consumer Reports Competition - Haight Solid State vs. Hydro Grow LED

photi said:
Hi Setting Sun, thanks for your thorough analyses. You have a knack.

The air exchange is what i have been thinking about lately due to the low heat output of the LEDs. Specifically, i am wondering if a cabinet environment (e.g. 2'x3'x4' ) can be completely sealed off with an air exchange happening only once a day during maintenance. Assuming adequate CO2, would a sealed environment such as this work, or would other factors be deleterious to the plants' health, like for instance excessive humidity? Would increased O2 levels (from respiration) be harmful?

Anyone can feel free to answer this, i don't have any experience growing so i have got no idea. Lack of air exchange would really make it easy to keep CO2 levels at around the 1500ppm levels, especially if one is using off-gassing pucks. Additionally, the lack of an automatic blower would be great for the stealthiness factor. I am thinking a person could install a blower with a carbon filter, leave it manually switched so he or she could turn it on just before opening the cabinet if odor is of concern. There could be a removable cover on the air intake vents at the bottom to keep the growing environment sealed for most of the day.
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I am fairly certain that you could grow plants just fine in a sealed glass container....provided they had Co2, other environmental factors being equal.
 
Re: 420 Consumer Reports Competition - Haight Solid State vs. Hydro Grow LED

how about using a propane lantern you have heat and co2
 
Re: 420 Consumer Reports Competition - Haight Solid State vs. Hydro Grow LED

rrb1 said:
how about using a propane lantern you have heat and co2
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If you try that in one of these tents, I suggest that you invest in a smoke alarm and a fire extinguisher.
 
Re: 420 Consumer Reports Competition - Haight Solid State vs. Hydro Grow LED

rrb1 said:
how about using a propane lantern you have heat and co2
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That's a damn good idea.
 
Re: 420 Consumer Reports Competition - Haight Solid State vs. Hydro Grow LED

not in the tent in the room!!!
i have been using all the time
 
Re: 420 Consumer Reports Competition - Haight Solid State vs. Hydro Grow LED

rrb1 said:
not in the tent in the room!!!
i have been using all the time
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That makes sense, my misunderstanding.

How much co2 does one of those put out?
 
Re: 420 Consumer Reports Competition - Haight Solid State vs. Hydro Grow LED

Take my word for it. Sealed box, tent, cab, with only opening the door once or twice a day, will not work. See the first part of my grow for reference.:smokin2:
 
Re: 420 Consumer Reports Competition - Haight Solid State vs. Hydro Grow LED

photi said:
Hi Setting Sun, thanks for your thorough analyses. You have a knack.

The air exchange is what i have been thinking about lately due to the low heat output of the LEDs. Specifically, i am wondering if a cabinet environment (e.g. 2'x3'x4' ) can be completely sealed off with an air exchange happening only once a day during maintenance. Assuming adequate CO2, would a sealed environment such as this work, or would other factors be deleterious to the plants' health, like for instance excessive humidity? Would increased O2 levels (from respiration) be harmful?

Anyone can feel free to answer this, i don't have any experience growing so i have got no idea. Lack of air exchange would really make it easy to keep CO2 levels at around the 1500ppm levels, especially if one is using off-gassing pucks. Additionally, the lack of an automatic blower would be great for the stealthiness factor. I am thinking a person could install a blower with a carbon filter, leave it manually switched so he or she could turn it on just before opening the cabinet if odor is of concern. There could be a removable cover on the air intake vents at the bottom to keep the growing environment sealed for most of the day.
Click to expand...

If you're adding CO2, you *want* a sealed grow environment in order for the CO2 to be effective.

The plants don't care whether the source is through ventilating the space with fans to bring in fresh air and CO2, or whether you release it inside from a source like a cylinder or CO2 generator.

There are advantages and disadvantages to using CO2, just as there are advantages and disadvantages to not using CO2.

If you grow with CO2 in a sealed environment, then you need to set up your fans and odor control to work with CO2 enrichment.

hope this helps ;)
 
Re: 420 Consumer Reports Competition - Haight Solid State vs. Hydro Grow LED

rrb1 said:
how about using a propane lantern you have heat and co2
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Only problem with that is the garage is 484 sq ft.

It would take several of them to even begin to raise the temp in there significantly. I don't think it would be cost-effective.

It's really not a problem with HID lights, and that's what I would normally be using in the winter months until I either drywall in my grow room or add a duct from the central gas furnace to the garage, if possible.

I'm glad this discussion came up because growers who depend on the heat from their HID lights to achieve adequate temps need to know that these LED lights probably aren't gonna do that.
 
Re: 420 Consumer Reports Competition - Haight Solid State vs. Hydro Grow LED

Day 14 veg

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Re: 420 Consumer Reports Competition - Haight Solid State vs. Hydro Grow LED

Nice work SS! I predict we'll be seeing some bushes soon! I love how clean and neat your set up is... I could take some lessons.
 
Re: 420 Consumer Reports Competition - Haight Solid State vs. Hydro Grow LED

As far as I can tell, they seem about neck-and-neck, correct? BTW, I joined just to view this test. We all benefit from your effort. Thanks and good luck. Looking forward to flowering as that's where the wheat will be separated from the chaff.
 
Re: 420 Consumer Reports Competition - Haight Solid State vs. Hydro Grow LED

Wow. I just found this (I'ma nube and just joined so, gimme a break) but what a great idea. What I can't help thinking tho, is that a third competitor should have been added; a comparable HID set up. As a nub who's planning my first grow and trying to decide on what lighting to use, I have been searching high and low for comparison grow tests between HID and LED. I really, really want to go with LED because of the heat, utility costs of HID but LED grow lights are newer, still being developed and evolving. HID is tried and proven. Too late now but including a comparable HID grow in this test would have been very informative. Still, a very interesting thread indeed.
 
Re: 420 Consumer Reports Competition - Haight Solid State vs. Hydro Grow LED

Bolivar said:
Great pics, in a couple of senses. And clear, also in a couple of senses...

:smokin:
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thanks Bolivar!

makes me go hmmmmmmmmmmmmmmmmmmm ;).

obxgardener said:
Nice work SS! I predict we'll be seeing some bushes soon! I love how clean and neat your set up is... I could take some lessons.
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Thanks OBX! I'd love to see some bushes in there meself ;).

As far as the neatness, I'm doing my best to make it *really* hard for bugs to hide in there. Only problem is that Mrs. Sun now knows that I am capable of being neat ;).

thanks again bro, I appreciate your visits and encouragement ;).

Bionic said:
As far as I can tell, they seem about neck-and-neck, correct? BTW, I joined just to view this test. We all benefit from your effort. Thanks and good luck. Looking forward to flowering as that's where the wheat will be separated from the chaff.
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Welcome to 420Mag, Bionic!

Glad you're going to be following this journal and I appreciate your kind comments ;).

It's been quite a bit of work, but it's been quite a bit of fun too ;).

Yeah, veg isn't very exciting, but things are moving along.

In overall growth, I would say the HGL and HSS plants are fairly equal, but they look different.

The HGL plants are shorter and stockier with thicker stems and petioles, while the HSS plants are about an inch taller and somewhat lankier, but not overly stretched at all.

The HGL light has been 6" from the plants, and the HSS light 12", per the companies recommendations. This may account for some of the difference between the plants, but the spectral output of the lights, and the beam angle are also quite different, so there are many variables at play.

I think if things are going to differentiate much in veg, we should be able to see it more clearly next Wednesday at 3 weeks.

thanks Bionic!

I'm glad you joined to follow this grow but take a look around, there's a lot of nice grows here:grinjoint:
 
Re: 420 Consumer Reports Competition - Haight Solid State vs. Hydro Grow LED

Bionic said:
As far as I can tell, they seem about neck-and-neck, correct? BTW, I joined just to view this test. We all benefit from your effort. Thanks and good luck. Looking forward to flowering as that's where the wheat will be separated from the chaff.
Click to expand...

haha! I joined to watch this one and Mmmick's! Thanks SS!
 
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