Ask us anything

[MIGRO 172]

Hi, Shane and Stephen here from MIGRO. We are very happy to answer any grow lighting related questions you have for us.

Edited May 23 by Cursed
To correct the thread title

[mysticriver 2,435]

1 hour ago, MIGRO said:

any grow lighting related questions

hi, id just like to check your latest thinking on how to use the MIGRO UVB 310 fixture - im getting 2 this week

I heard on previous videos u suggest 2 hrs, in the middle of the 12-hr light cycle, for the last 3 weeks (for photoperiods, 2 weeks for autos); at 60cm h.hieght

that still the case?

 

 

mystic

[MindSoup 21,559]

LED fixture and an HPS, both drawing 600w from the wall. Which one produces more heat? 

[MIGRO 172]

6 hours ago, mysticriver said:

hi, id just like to check your latest thinking on how to use the MIGRO UVB 310 fixture - im getting 2 this week

I heard on previous videos u suggest 2 hrs, in the middle of the 12-hr light cycle, for the last 3 weeks (for photoperiods, 2 weeks for autos); at 60cm h.hieght

that still the case?

 

 

mystic

Yes

[MIGRO 172]

4 hours ago, MindSoup said:

LED fixture and an HPS, both drawing 600w from the wall. Which one produces more heat? 

They would produce around the same amount of heat but 400 watts of LED would outperform a 600 watt hps with significantly less heat output. 

[MindSoup 21,559]

This shit has got me baffled, in my head it can't make more light and the same amount of heat with the same amount not energy??? 

 

I clearly need to brush up on my physics . 

[stu914 40,877]

@MindSoup

 

600w of led and 600w hps will produce the same amount of heat but leds have a greater spread and are more efficient.

Therefore they will produce more yield watt for watt.

To produce a comparable yield to hps, leds can be turned down reducing overall heat and cost.

[catweazle1 4,890]

30 minutes ago, MindSoup said:

This shit has got me baffled, in my head it can't make more light and the same amount of heat with the same amount not energy??? 

 

I clearly need to brush up on my physics . 

Going from HID to LED, you are swapping heat-producing longwave photons for more shorter PAR wavelengths for the same amount of energy. Energy is conserved.

Edited May 23 by catweazle1

[MindSoup 21,559]

Yeah people have been trying to explain it to me all day on another thread, but what knowledge I've managed to retain from GCSE Physics just isn't enough for me to comprehend it . 

 

So they're both (600w HPS & 600 watt) producing more less the same amount of heat and same total amount of light, but the amount of PAR in each spectrum is what varies?

More percentage of total light is PAR with LED and that's what makes them more efficient? 

 

And because the LEDs spread the heat you can hang closer without causing heat stress and thus make better use of the available light? 

Edited May 23 by MindSoup

[bap 0]

Whats the best light setup for a 2 x 1m SCROG setup

[MIGRO 172]

On 23/05/2023 at 8:38 PM, bap said:

Whats the best light setup for a 2 x 1m SCROG setup

Hi, you need about 330 watts per m2 so about 660 to 750 watts. The ARAY 12 would be perfect for your setup, https://migrolight.com/collections/all/products/migro-aray-12-720w-800w

Hang them side to side for perfect coverage

[MIGRO 172]

On 23/05/2023 at 6:21 PM, MindSoup said:

Yeah people have been trying to explain it to me all day on another thread, but what knowledge I've managed to retain from GCSE Physics just isn't enough for me to comprehend it . 

 

So they're both (600w HPS & 600 watt) producing more less the same amount of heat and same total amount of light, but the amount of PAR in each spectrum is what varies?

More percentage of total light is PAR with LED and that's what makes them more efficient? 

 

And because the LEDs spread the heat you can hang closer without causing heat stress and thus make better use of the available light? 

LEDs are now twice as efficient as HPS in terms of PAR output per watt. LEDs produce about 30% of its consumed watts in heat. HPS produce about 70% of its consumed power in heat.

600 watts x 70% = 420 watts heat

300 watts LED (same PAR output) x 30% = 90 watts heat

I hope this helps, take care, Shane

[MIGRO 172]

On 23/05/2023 at 6:17 PM, catweazle1 said:

Going from HID to LED, you are swapping heat-producing longwave photons for more shorter PAR wavelengths for the same amount of energy. Energy is conserved.

LEDs are now twice as efficient as HPS in terms of PAR output per watt. LEDs produce about 30% of its consumed watts in heat. HPS produce about 70% of its consumed power in heat.

600 watts x 70% = 420 watts heat

300 watts LED (same PAR output) x 30% = 90 watts heat

I hope this helps, take care, Shane

[MIGRO 172]

On 23/05/2023 at 10:35 AM, mysticriver said:

hi, id just like to check your latest thinking on how to use the MIGRO UVB 310 fixture - im getting 2 this week

I heard on previous videos u suggest 2 hrs, in the middle of the 12-hr light cycle, for the last 3 weeks (for photoperiods, 2 weeks for autos); at 60cm h.hieght

that still the case?

 

 

mystic

General advice for Photos is the last two weeks of flowering for 2 hours per day. I would suggest 2 hours per day for the last 10 days with Autos

[MIGRO 172]

On 23/05/2023 at 5:36 PM, MindSoup said:

This shit has got me baffled, in my head it can't make more light and the same amount of heat with the same amount not energy??? 

 

I clearly need to brush up on my physics . 

LEDs are now twice as efficient as HPS in terms of PAR output per watt. LEDs produce about 30% of its consumed watts in heat. HPS produce about 70% of its consumed power in heat.

600 watts x 70% = 420 watts heat

300 watts LED (same PAR output) x 30% = 90 watts heat

I hope this helps, take care, Shane