Seasoned grower. I need help from experienced LED grower...

[ProfessorChaos420]

Hey, Yall.
Im a grower of better than 10 years and Ive finally made the transition to LEDs. Im experiencing some mild stress from my girls and dont understand why. The leaf tips are turning slightly down on a few of them. I believe I may be doing something wrong with these LEDs. Theyre the only variable I dont have experience with.
The room theyre in is good. I built it last week while the girls were vegging in my bedroom closet, under T5s and T12s. The room theyre in now is in my basement. Its 8'x12' with almost 7' ceilings. I waited till the rain season was well underway so I could see if it leaks. It doesnt. Its all concrete and block, so I basically built a room inside a room. New floor joists, new wall studs, 3/4" Flooring and the whole room is covered in Panda Film. The humidity stays good.(50%-65%) Now, I told you all that so you could eliminate those possibilities from your mind when offering help. Its a good room.
Now... On to what I think may be causing the fairly mild stress Im seeing. I did a little homework(not here) and found that growers were having luck with 'King LED Plus 1200w' grow lamps. *Click Here*

POSSIBLE SHIT IM DOING WRONG...
*I have BOTH SWITCHES TURNED ON. I can find nothing in the manual that tells me if Im supposed to have both the 'VEG' and the 'BLOOM' switch flipped or just have the 'BLOOM' switch turned on. That may be whats wrong...
*I just moved them back off the tops. I think I may have had them too close. I know with HPS lights, we cant have them too close bc of thee heat pur bulbs put off, so I was assuming I could be within 6"-8" of the tops. I've now got them ab 16" away.
Other than those two things, I dont know what could be wrong. Hopefully someone has used these lamps before with success and can help me figure out what Im doing wrong lol
The good thing is, I wasnt 100% sure ab these lights, so this is a trial run. I only bought two of them, and I'm only flowering 5 girls under them. I bought a few extra seeds for my outdoor so Id have 5 or 6 to put them down there. If they work out, Ill fill the room with them, stretch a net and fill it with clones.


P.S. If youre curious, my genetics are...
Three Blue Kings
Lemon Kush Headband
Black D.O.G.
Blue Dream
BLACK SKULL-Fruity Pebbles
FP is a freebie that Im growing bc it sounds like itll make some awesome extract lol

 

[Gorillaglue4u]

Not sure about your lights but leds are usually supposed to be further away due to intensity. I could be wrong tho but id try raising the light a bit.

 

[ProfessorChaos420]

Not sure about your lights but leds are usually supposed to be further away due to intensity. I could be wrong tho but id try raising the light a bit.

Thank you. Ive done that.
I hope that was the issue.

 

[Herb & Suds]

If I feed too much N my plants tend to claw

 

[Rocket Soul]

Hard to see with the pink light. Maybe some white light pics? Cant make it out but stems maybe purple aswell? If so, did it start with purple stems and then clawing?


Purple stems is usually too much light without proper transpiration, what is cannopy temp? Can also be due to plant being inmature.

81-84F is usually recomended for leds, your rh seems ok.

These blurple lights tend to grow really dark green plants so its hard to distinguish normal color from too much N which usually comes with some clawing.

Light might be too low, these lights usually come with lenses which make them quite intense just under the light. The tiny one in the sexond cluster looks properly suffering from light stress.

 

[ProfessorChaos420]

If I feed too much N my plants tend to claw

Organic soil I composted to Super Soil. Ive fed nothing but Spring water and small shots of Carbo Load thus far. I'll start them on organic bloom nutes soon and will push boosters later in flowering.

Hard to see with the pink light. Maybe some white light pics? Cant make it out but stems maybe purple aswell? If so, did it start with purple stems and then clawing?
Purple stems is usually too much light without proper transpiration, what is cannopy temp? Can also be due to plant being inmature.

81-84F is usually recomended for leds, your rh seems ok.

These blurple lights tend to grow really dark green plants so its hard to distinguish normal color from too much N which usually comes with some clawing.

Light might be too low, these lights usually come with lenses which make them quite intense just under the light. The tiny one in the sexond cluster looks properly suffering from light stress.

Canopy temps are good.(67-74) I'm pulling air into the room with a 6' inline fan, from the vent in the room just above it. I have two fans moving the air around the lights and the plants pretty well.
It sounds like I may have been putting the light too close. I've got them ab 16" off the canopy now.
They are plenty mature. Theyre small bc they were vegged under fluoros. They're six weeks in. They have 6 well developed nodes with small branching. I topped them ab a week before turning them.
The tiny one has looked wilty and droopy from seed. Its a Pineapple Express I got as a freebie. I was hoping it'd come out of it but it hasnt. Ive decided to kill it. Its why it never got moved to a seven gallon pot and why I never mentioned it. Its still there bc I havent had a chance to properly dispose of it.

 

[Gorillaglue4u]

Leds seem to run better at 80-84

 

[ProfessorChaos420]

Leds seem to run better at 80-84

Right on... I'll move my temps up closer to 80.
It shouldnt be hard to get temps up. The room Im pulling air from is a storage room. I should be able to just close the other vent in the store room(the one thats still pumping Central Air) and thereby warm up the air being pulled in my room.

 

[Rocket Soul]

Get those temps up, hps/sunlight and just about any other light heats your cannopy and helps with transpiration which is your motor for drinking. With leds you need to adjust heat upwards, stay above 80 or they wont drink right. Read up on vapor pressure deficit/VPD, its essential that you undersrand how temp and RH compound together to make the plant drink more or less. This tool is cool:

http://opennlabs.com/vpd/VPD_calculator.php it allows you to see how vpd is affected by having hotter or colder light. But use it as guide line, not slavish. Let your plants decide what they want and when.

Also raise your lights a bit. With no drinking and intense light your plants will look f-ed up, but im im surprised it looks more like tox than deficiency.

 

[ProfessorChaos420]

Get those temps up, hps/sunlight and just about any other light heats your cannopy and helps with transpiration which is your motor for drinking. With leds you need to adjust heat upwards, stay above 80 or they wont drink right. Read up on vapor pressure deficit/VPD, its essential that you undersrand how temp and RH compound together to make the plant drink more or less. This tool is cool:

http://opennlabs.com/vpd/VPD_calculator.php it allows you to see how vpd is affected by having hotter or colder light. But use it as guide line, not slavish. Let your plants decide what they want and when.

Also raise your lights a bit. With no drinking and intense light your plants will look f-ed up, but im im surprised it looks more like tox than deficiency.

I really appreciate the help. Ive closed the central air vent in thee room i pull my air from and Im sure that will raise temps down there.
I promise you, if nutes were a possible issue, Id tell ya. lol
Theyre in organic soil and have received only water and a couple very small shots of carbs

 

[PSUAGRO.]

add more light and water less?..........inefficient blurple/shitty coverage w tight lenses, shows this often

 

[SheeshM]

Try looking up the hanging height online. I get 2-3.5 ft with a quick google search. Verify that height range and raise your light is step 1, IMO.

 

[ProfessorChaos420]

I wanna thank everyone for the help. Things look good now.
Lights are 30" off the tops...
The temp in the room Im pulling air from has been increased and dehumidified and things are steady now.

Only sensors 1&2 are in the room. Temp three is the room around the grow room and the main temp is my living room lol

 

[ProfessorChaos420]

Still a bit yellow on the Blue Dream but Im hoping she'll adjust to the LEDS

 

[Rocket Soul]

Yellow can either be bleaching or poss mag def.

You should be able to bring the lights closer as you increase transpiration/heat.
They really like +80F although its very hard to believe if your coming from HPS. Leafs will be aprox 10F (or so) cooler than under a hps, current temps is a bit like running your grow at 63 with HPS, approx. Its vital to read up and understand a bit about VPD if you want a high preforming led garden.

 

[ProfessorChaos420]

Yellow can either be bleaching or poss mag def.

You should be able to bring the lights closer as you increase transpiration/heat.
They really like +80F although its very hard to believe if your coming from HPS. Leafs will be aprox 10F (or so) cooler than under a hps, current temps is a bit like running your grow at 63 with HPS, approx. Its vital to read up and understand a bit about VPD if you want a high preforming led garden.

I do. And thank you again for the help.
Youre right. lol Ive been growing all these years and ive had to maintain temps between 67-77 degrees. It all makes sense. These LEDs put off almost no heat. My last indoor flowering room had three 1000w HPS lamps running Eye Hortilux bulbs. Those bastards got HOT! I had a small window ac mounted in the wall of the room.

 

[coreywebster]

These LEDs put off almost no heat. My last indoor flowering room had three 1000w HPS lamps running Eye Hortilux bulbs. Those bastards got HOT! I had a small window ac mounted in the wall of the room.

You know there's a big difference between 3000w of hps and less than 500w of LED. Both in heat and performance.
I hope your not planning on filling that space any more than you have already or expecting results better than one 600w light could give you.

Plants look a lot happier now

 

[ProfessorChaos420]

You know there's a big difference between 3000w of hps and less than 500w of LED. Both in heat and performance.
I hope your not planning on filling that space any more than you have already or expecting results better than one 600w light could give you.

Plants look a lot happier now

nope.
couple 1200w lights for 4-6 small plants is what i was figuring

 

[ProfessorChaos420]

Put a small space heater in the air im pulling air from to raise temps. the stay between 79-83 degrees now. Had been thinking ab doing that but hadnt yet. idk why it keeps uploding that image sideways but ok...
top temp is irrelevant. boxes 1&2 are the room

 

[ProfessorChaos420]

I really appreciate all the help Ive gotten here from y'all.
If you're curious how they turn out, I've started a short grow Journal to post my results in, HERE.

Thanks again!