Confined Space 850W LED Master Kush Grow

OK, this is going to be my first grow using LEDs... I am a fully licensed grower with an Rx for medical marijuana. I will be growing 24 master kush that I received as clones (they are not in the greatest condition). I will be vegging them for one more week, they were transplanted into 2 gallon pots 2 days ago.

I am using a total of 850w of LED power for this grow in a very confined space that measures 14' long x 4' wide x 3' high. This will be a sealed environment grow and I will be using CO2. For nutes I am using GH Floranova 1 part grow and flower, liquid cool bloom and floralicious plus. I have a total of 5 LED panels that are 5 spectrums and have both 1w and 3w bulbs in them.

When I first got the clones they were in pretty rough condition, very little root development when I transplanted. That said, it's been 2 days under the LEDs on an 18/6 schedule and the plants have shown a dramatic improvement so far. A few clones that I thought were dead have actually started to show signs of new growth occurring which makes me quite happy! The only thing that concerns me is that a few of the plants appear to have been triggered into flower...

This first set of photos is from 2 days ago when they were first transplanted.

Here are a few pics from today, 2 days after the transplant with one very mild feeding.

oops... here is one more pic.

looks good so far man....how long you gonna veg for?...............im sub,d

be sure to have LEDs not to close to the plants because you can easily bleach them. for maximum efficiency you should get a cheap light meter to see how far you can bring up your LEDS and still get the same intensity to your plants it will help alot. also if you can transplant it all to 5 gallon pots. trust me on this i vegged a plant in 1 gal pot for 7 weeks from seed under leds and total yield? 10 gram a plant, pot size make a huge difference. 850 watts is overkill for your plants in vegg, they will still grow but your power bill will get a kick in the nuts. i would suggest using 200 watts to do it. you save a lot and the plant will grow faster for your money as oppose to 850 watts.

spliffbazz said:

looks good so far man....how long you gonna veg for?...............im sub,d

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I am going to go for another week and see how they look. I only have 30" from the floor to the light fixtures to work with so my actual plant height can't go more than 24" so I should probably flip them at around 10" - 12". A few of these clones are quite a ways behind the larger plants so I might have to top a few for the stragglers to catch up. None the less it will be a good experiment and I'm looking forward to what these LEDs can actually accomplish!

yes it should be good especially with that much light.

you should use 5 gal pots and veg for 3 weeks to a month till your plants filled the room side by side, vegging in 1-2 gal pots will take forever, i notice a big up in speed of growth under a larger pot. low stress training is highly suggested for LEDs you want that light to penetrate as far as it can go. water plants once ever 2-3 days since you dont have heat issues. as for the nutrients its easy to over nute your plants under LEDS. the safest route I suggest is feed half doses of what you would normally feed it, when its under fed the plant will let you know by yellowing up early on during flowering or veg. than you can up your nutrients use.

NoobgrowerLbc said:

be sure to have LEDs not to close to the plants because you can easily bleach them. for maximum efficiency you should get a cheap light meter to see how far you can bring up your LEDS and still get the same intensity to your plants it will help alot. also if you can transplant it all to 5 gallon pots. trust me on this i vegged a plant in 1 gal pot for 7 weeks from seed under leds and total yield? 10 gram a plant, pot size make a huge difference. 850 watts is overkill for your plants in vegg, they will still grow but your power bill will get a kick in the nuts. i would suggest using 200 watts to do it. you save a lot and the plant will grow faster for your money as oppose to 850 watts.

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I don't have the room for 5 gallon pots or I would use them, I agree that pot size does affect yield. I am using 2 gallon pots for this first grow. The lights I am using have veg and flower settings on them but I was told by a friend that has the same lights that running them in full spectrum mode gets the best results. The 850w only adds about $15 a month to my power bill so I'm not that concerned about that aspect. Thanks for the input

ledbudguy said:

I don't have the room for 5 gallon pots or I would use them, I agree that pot size does affect yield. I am using 2 gallon pots for this first grow. The lights I am using have veg and flower settings on them but I was told by a friend that has the same lights that running them in full spectrum mode gets the best results. The 850w only adds about $15 a month to my power bill so I'm not that concerned about that aspect. Thanks for the input

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dude i dont think you have 850w if it only cost you 15$ a month to vegg, I vegg with 600 watts LEDS and my bill is above 80. are you sure it dosent say 90W=400watt HPS? i dont mean to sound like a critic but for something to cost so cheap in your power bill means your actually running alot less or its broken only a few LEDS are actually on.

NoobgrowerLbc said:

dude i dont think you have 850w if it only cost you 15$ a month to vegg, I vegg with 600 watts LEDS and my bill is above 80. are you sure it dosent say 90W=400watt HPS? i dont mean to sound like a critic but for something to cost so cheap in your power bill means your actually running alot less or its broken only a few LEDS are actually on.

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Each fixture is 170w, I have 5 of them. Here in BC the rate per kWh is around 0.15. Running 12 hours a day this translates into roughly $15 - $20 per month to run 850w of LEDs

looks great.. looking forward to following your LED grow..

ledbudguy said:

Each fixture is 170w, I have 5 of them. Here in BC the rate per kWh is around 0.15. Running 12 hours a day this translates into roughly $15 - $20 per month to run 850w of LEDs

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I am so jealous, here in Cali im not sure what we pay but i probably pay 40-50 a month running 12 hours a day, you got it good man I would run 1500 watts lol if it was that cheap.

So today I notice that the plants that appeared to be kicked over have indeed started to show signs of new growth AND the stragglers have started to show signs of new vegetative growth as well. Things are looking good!

One definite plus running these LEDs is temperature. The room high temp is only 82 degrees

Two new pics today taken after the plants were misted... tomorrow is the first official feeding day!

You have the perfect set up for an ebb & flow system, should you ever decide to use one. Nice looking grow space.

i cant wait.

nice attic conversion by the way (I assume its an attic coz of the slanted wall...)

Very interesting grow - subbed.
For your next grow it may be worth trying to find suitable sized square pots ... if your space is limited, square pots fit more soil into the same footprint.

Grumpy Old Dreamer said:

Very interesting grow - subbed.
For your next grow it may be worth trying to find suitable sized square pots ... if your space is limited, square pots fit more soil into the same footprint.

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Good advice... I'm going to look into that, thanks!

It's been 4 days since the transplant... Today the girls received their first full feeding and I noticed that the mites that came with these clones haven't been eradicated so I dropped a konk bomb on them during lights out last night! Although the plants aren't growing at an alarming rate (I suppose this is due to the fact that they were triggered into bud prior to me getting them) they are indeed looking healthy!!!

Some of the stragglers are lacking behind but I hope this will change once they are all turned back over to vegetative growth cycle.

Most of the larger plants have turned back over and are showing good signs of new veg, I am thinking that I will probably have to top these babies until the stragglers catch up. Should make for an interesting comparison for final yield?

Anyways, here are the pics from day 4

From the little I have learnt from using LEDs, the plants tend to grow with short internodes ... the plants don't seem to have any great need to reach for the lights as they are getting all the light that they need.