LED Light - Veg & Bloom Settings

Vegs · Jul 3, 2019

Gang,

I hate to admit it, but I am on my first garden using LED lights. I'm used to MH, HPS and LEC fixtures so my Golspark 1200w Full Spectrum fixture is my first go with LED. The light has a veg and a bloom setting.

Here comes the noob question of the year...do I keep veg on and then turn on bloom and run both through flowering or should i turn off Veg, enable Bloom for a bit then turn veg back on along with bloom?

Many thanks in advance.

StareCase · Jul 4, 2019

Vegs said:
… do I keep veg on and then turn on bloom and run both through flowering or should i turn off Veg, enable Bloom for a bit then turn veg back on along with bloom …

Turn both the VEG and BLOOM lights on for the whole cycle.

Brettman · Jul 4, 2019

Agreed, veg + bloom for the whole cycle. Except for the first couple weeks to save some electricity $

hotrodharley · Jul 4, 2019

Your light doesn’t even pull 250 watts. Leave everything on. The whole way. Keep it high. At least 22” to start.

Vegs · Jul 4, 2019

Thank you gang. I'll keep both on when I want to put the gals into flower. Agreed, these guys don't hog up electricity like the older fixtures from the days of old. I have no issues with leaving them on 18/6 veg and 12/12 flower.

StareCase · Jul 4, 2019

Vegs said:
Thank you gang. I'll keep both on when I want to put the gals into flower. Agreed, these guys don't hog up electricity like the older fixtures from the days of old. I have no issues with leaving them on 18/6 veg and 12/12 flower.

They are pretty efficient compared to previous lighting methods. I go 18/6 during veg as well. But ...

... I still recommended, as does Hot Rod, that you leave both VEG and BLOOM switches on from start to finish. My first VEG only grow, I ended up with a lanky plant and 4" node spacing. Since then, I have used both the VEG and the BLOOM switches and the nodes were much tighter.

Vegs · Jul 5, 2019

Well that is interesting using both spectrum's and only use 18/6 and 12/12 to induce flowering....right?

Fart Vapor · Apr 18, 2020

Can someone check my grow journal? I have a light at exactly 40" and only the Veg switch turned on. I am encouraged to turn on Bloom switch after reading this, but what about my Light height above plants? I got 40" from manufacturer recommendations. Here is the light I have:
Amazon Link to GREENGO 900W Equivalent Light

Brettman · Apr 19, 2020

@Fart Vapor
Yeah I would turn the bloom on for sure, that light draws 190watts. I’d also move it down to like 24-30” for now as well. After a couple weeks down to 18” and then like 12-18 for flower. Your also going to need much more light for flower in a 4x4. With blurple lighting like you and I have , you want at least 50watts per square foot. So your good to flower a 2x2 area with that light.

Fart Vapor · Apr 20, 2020

Brettman said:
@Fart Vapor
Yeah I would turn the bloom on for sure, that light draws 190watts. I’d also move it down to like 24-30” for now as well. After a couple weeks down to 18” and then like 12-18 for flower. Your also going to need much more light for flower in a 4x4. With blurple lighting like you and I have , you want at least 50watts per square foot. So your good to flower a 2x2 area with that light.

That definitely sped up the vegetative growth rate!!! Thank you!

Budzbuddha · Apr 20, 2020

StareCase said:
Turn both the VEG and BLOOM lights on for the whole cycle.

yep , no matter the brand .

Although , you will find that panel probably less than stellar than your old trusty hps.
Look at COBS , linear strips or boards.

Fart Vapor · Apr 20, 2020

Fart Vapor said:
Can someone check my grow journal? I have a light at exactly 40" and only the Veg switch turned on. I am encouraged to turn on Bloom switch after reading this, but what about my Light height above plants? I got 40" from manufacturer recommendations. Here is the light I have:
Amazon Link to GREENGO 900W Equivalent Light

How many grams can I expect to harvest with only one of the lights above? (without adding additional lighting)

Brettman · Apr 21, 2020

Maybe like 100 (3-4oz) Only use it over a 2x2 area or you will not be happy with the results.

StareCase · Apr 21, 2020

Brettman said:
... Maybe like 100 ...

( BTW - Love that team!! )Agreed. Not much more than 100g.

Fart Vapor said:
... How many grams can I expect to harvest with only one of the lights above? (without adding additional lighting) ...

There will be a few decent tops, around 2" - 3" in size, directly under the light. Anything outside of the light or below 3" will be LARF.

Fart Vapor · Apr 24, 2020

Brettman said:
Maybe like 100 (3-4oz) Only use it over a 2x2 area or you will not be happy with the results.

I just ordered a new Light to go with the Light I already have. How many grams do you think I will harvest with both lights running over 3 Auto’s as seen in my Grow journal?

Brettman · Apr 25, 2020

So you’ve got 190+250 for a total of 440watts. Are you still planning on utilizing the whole 4x4 tent ? That’s plenty of light for three plants but a little under powered for a 4x4, more like 3x4. I’m using similar lights as you and I’ve got around 430 watts in a 2x4 lol.

Fart Vapor · Apr 25, 2020

Brettman said:
So you’ve got 190+250 for a total of 440watts. Are you still planning on utilizing the whole 4x4 tent ? That’s plenty of light for three plants but a little under powered for a 4x4, more like 3x4. I’m using similar lights as you and I’ve got around 430 watts in a 2x4 lol.

It’s really up to the three plants, as far as how much space will be used. This is my first time to ever make it this far in a grow, so I really do not know how big they going to get. I’m definitely not planting anymore, until these are done.

ANC · Apr 25, 2020

light needs two settings, on and off

StareCase · Apr 25, 2020

Brettman said:
... I’m using similar lights as you and I’ve got around 430 watts in a 2x4 lol ...

How do you find managing the waste heat with 430 blurple watts in a 2 x 4?

Similar to your set-up, I had 520 blurple watts in my 2 x 4 and found that I couldn't seem to get rid of the heat fast enough. I was having to run my exhaust almost flat out which probably removed any new air brought in from outside far too quickly. This flower cycle, I am going with a QB set-up with the driver wired external to reduce the waste heat.

Tested the heat output from the new light - the fan runs at 40% and the air coming out of the exhaust is not much warmer than the ambient air.

PoopyMcPooper · Apr 25, 2020

StareCase said:
How do you find managing the waste heat with 430 blurple watts in a 2 x 4?

Similar to your set-up, I had 520 blurple watts in my 2 x 4 and found that I couldn't seem to get rid of the heat fast enough. I was having to run my exhaust almost flat out which probably removed any new air brought in from outside far too quickly. This flower cycle, I am going with a QB set-up with the driver wired external to reduce the waste heat.

Tested the heat output from the new light - the fan runs at 40% and the air coming out of the exhaust is not much warmer than the ambient air.

what is your exhaust setup? how is it flowing?

LED Light - Veg & Bloom Settings

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