LED lights not doing so good.

jimihendrix1 said:

Yep. 100%. I also veg 100% with them. We start all seedling, and rooted clones with 100% output.

The SUN at the equator in full sun is much more powerful than the lights.

The main thing is you have to have alot of fresh air, or CO2 enrichment or they can/will suffer. They wont have enough CO2 for metabolism. Air/CO2 is critical. IMHO thats the main reason people get light stress. In the winter we can get a 1000w Hortilux HPS/1600umol as close as 12 inches with no light stress, but we have huge ventilation/air flow.

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ya I also use co2 supplementation even in veg. dunno why the heck my leaves got burned unless that pic isnt light burn.

jimihendrix1 said:

I meant HLG sorry typo. Read what I pasted. HLG 550 V2 R-Spec 1257umol. Sorry for the typo/confusion

I dont think there's any such company as HGL

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I nearly pulled you on that but didn't want to be a twat, but there is a HGL and its that scammy Cammie LED company that got banned last year from here and has a rep of ratting on customers who complain.

At this point weve only been Vegging with the Gavita, to see if works as well as the Hortilux HPS, and it seemingly does. We will use the Gavita for flowering in 1 month, and use the Gavita DE 1150w for Veg. We run it between 36-40 inches. Anything less than 36 inches, and they fry.
Never heard of the HGL

SDK420 said:

12 thousand dollars was spent on led lights to replace some hps light. the HLG 600W qbs. and from what i cant tell the plants grow like shit now. they dont perk up anymore. the bud development is soooo slow that u can barley even tell they are growing. ive never used leds before but i can tell the difference. and from what i can tell they are definitely not worth the investment so far. hell if i could id probably return these pos lights

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You are describing an issue of inadequate lighting at best

Not a flawed product

How many watts of hps did U replace with howany watts of HLG?

Oh I'm sure he mentioned it
I'll look back

Ok had a read yeah looks like peeps got U covered

It's really a dif style with led

Personally I run my veg at about 30c coz it's drives photosynthesis

Aim for 35 watts per sq foot

Led is all about even spraed and uniform spears

Don't turn them on the side
Cover the whole canopy

My 2c


Cheering for U from down Under mate

Best of luck

bk78 said:

Odd that anyone would just dump $12k on lights without ever running a test light first. Any pics of your room?

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Plus, lights are only one part of the equation. So many other factors could be throwing off the growth.

I quickly went through all the pages, and saw that there were still no pics of this setup. Sounds like someone might be talking shit about his dream system.

Like it says below, "If you don't have a grow to show, you're not really in the know."...well, at least it used to be below LOL



But hey, it's never too late to post some.

JSB99 said:

I quickly went through all the pages, and saw that there were still no pics of this setup. Sounds like someone might be talking shit about his dream system.

Like it says below, "If you don't have a grow to show, you're not really in the know."

But hey, it's never too late to post some.

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They posted pics earlier on in the thread that showed the lights over their tables but I don’t know what happened to them.

600w hps on left, 600w led on right

SDK420 said:

600w hps on left, 600w led on right

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Which “600w” led?

and after this post he fell off the forum.

Gond00s said:

and after this post he fell off the forum.

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Maybe he got the virus

Did you get the virus?

No virus lol. Everything is doing good. the added temps made the difference. '3' HLG600 over a 4x8 at about 60 percent brightness seems to do well. Ill know more as time goes on. There is also CO2 enrichment @1000. Aiming for 4+ LB a table like with the HPS. Going thru $4k in seeds to see what pops up

SDK420 said:

No virus lol. Everything is doing good. the added temps made the difference. '3' HLG600 over a 4x8 at about 60 percent brightness seems to do well. Ill know more as time goes on. There is also CO2 enrichment @1000. Aiming for 4+ LB a table like with the HPS. Going thru $4k in seeds to see what pops up

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Glad you stuck with it and took the advice well man.

My old set up was 4x8 , 3x 600w hps, switched to LED, first light 720w of COB over one half, second half I lit up with 2x 260w HLG kits, they had just been released . Was pulling 2lb of either side. The QBs were more efficient than the COBs , yours are probably even more so and you have 3x 600s so its a lot of light.

There was never a point in flower I felt like my LEDs didn't beat my HPS.
Every so often we see someone with similar story to yours. Sometimes they throw a fit and cut their nose off to spite their faces.

Glad your on the way to making the most of yours.

SDK420 said:

No virus lol. Everything is doing good. the added temps made the difference. '3' HLG600 over a 4x8 at about 60 percent brightness seems to do well. Ill know more as time goes on. There is also CO2 enrichment @1000. Aiming for 4+ LB a table like with the HPS. Going thru $4k in seeds to see what pops up

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Skim through this if you want further reassurance.

Okay so an update. Raising the lights initially help it seemed and also raising the temperatures. However so far 4 harvest have been destroyed and aborted because the plants grow like shit under these lights. Out of nowhere they just turn yellow and eventually stop growing.3 600 watt lights does seem like a lot of light for a 4x8 table however they are only running at 40% at 20 inches away. But still remains it has been a disaster using these lights. WTH? The mothers under the same lights dont show any problems. they grow a little slower but they are somtimes 4 inches away from the light and are still fine


co2=900ppm
ph=5.8-6.0
temp=83-86
humidity =35%
water temp =76
medium=hydroton

The light needs to be measured what do you use? The clones look great when they go in and come from under 1200w of MH@ 14 inches away. water temps of the clones 69f

SDK420 said:

what do you think the optimal height for leds like this

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Gavita recommends 24 inches for their 1700e. Full Power. Is 1700umol
1000w Hortilux HPS is 1600umol, and is arguably the very best Single Ended HID made. In the right conditions you can get a 1000w HID 20 inches or less.
The Gavita DE 1150w HID will fry plants at anything less than 3 feet. 2100umol, and insane amounts of Infrared.

What are you feeding the plants in Flowering?????

jimihendrix1 said:

Gavita recommends 24 inches for their 1700e. Full Power. Is 1700umol
1000w Hortilux HPS is 1600umol, and is arguably the very best Single Ended HID made. In the right conditions you can get a 1000w HID 20 inches or less.
The Gavita DE 1150w HID will fry plants at anything less than 3 feet. 2100umol, and insane amounts of Infrared.

What are you feeding the plants in Flowering?????

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usually flora micro/calmag.cns17gro in veg

bloom cns17bloom/calmag/potassium silicate/potassium hydroxide as ph up.

ro water with heavy airstones. It seemed like the roots might have been a bit weak. At first it seems like the stretch is going great then all of a sudden with nice structure they start yellowing and the trics are like dust and hardly exist.im not ruling out root rot but the same set of clones at the same time under the hid seem fine. looking at the root under zoom reveal no insects

in bllom 125gallons of water usually gets 5.5-6 cups of cns17bloom 3/4cup calmag and 1/4cup protekt.

foliar feeding them brings out some greens but in the end they still die as if the roots die. i dont notice any slime of crazy shit in the root zone except they are kinda weak. i also think the hydroton shifts when the table floods and harms the root a littlebit

in the end i dont think its possible to get 30 inches from them in bloom. i need to know what the umol is at the leafs then couldnt i make sure theyre not getting too much or too little? what meter would be best to use?

3 hlg600watt per table