Hlg scorpion r spec intensity question.....

RCJR

Active Member
I have a hlg scorpion r spec in a 4x4 tent. It has a dimmer and I'm not sure should i be running it at the recommended distance full blast or dimmed down throughout the grow? This question pertains from veg through flower, Distance and intensity.
Thanks
 

LEDTonic - Daniel

Active Member
Hey!

HLG releases very little light intensity (PPFD) information about their newer lights.
If you're unfamiliar with PPFD, do a quick Google search. It's essentially light intensity quantified.

I was able to find a PPFD map here: https://www.ledgrowlightsdepot.com/products/horticulture-lighting-group-hlg-scorpion-rspec



I assume this is without a tent so you should add about 30% in the outer edges and 5-10% in the middle.
This would be on maximum blast.

Plants in early veg will do well with PPFD 200-300.
Late veg: 300-400
Early flowering: 400-600
Late flowering: 600-900

Half dim should give you half the light intensity (i.e. half the PPFD) so for early veg you'll want about 30% power. Late veg 50% power and mid flowering full power, according to the PPFD map above.
 

RCJR

Active Member
Hey!

HLG releases very little light intensity (PPFD) information about their newer lights.
If you're unfamiliar with PPFD, do a quick Google search. It's essentially light intensity quantified.

I was able to find a PPFD map here: https://www.ledgrowlightsdepot.com/products/horticulture-lighting-group-hlg-scorpion-rspec



I assume this is without a tent so you should add about 30% in the outer edges and 5-10% in the middle.
This would be on maximum blast.

Plants in early veg will do well with PPFD 200-300.
Late veg: 300-400
Early flowering: 400-600
Late flowering: 600-900

Half dim should give you half the light intensity (i.e. half the PPFD) so for early veg you'll want about 30% power. Late veg 50% power and mid flowering full power, according to the PPFD map above.
Do you recommend the 12 inch or 18 inch above the canopy?
 

LEDTonic - Daniel

Active Member
The values in the map above are measured at a 12" distance. It would be difficult to speculate how the PPFD values changes if the distance is increased to 18". 18" would give a more even light distribution but since HLG does not provide PPFD maps on 18" then we have no way of determining what the light intensity (PPFD) would be at that height, so with 12".
 

OneHitDone

Well-Known Member
The values in the map above are measured at a 12" distance. It would be difficult to speculate how the PPFD values changes if the distance is increased to 18". 18" would give a more even light distribution but since HLG does not provide PPFD maps on 18" then we have no way of determining what the light intensity (PPFD) would be at that height, so with 12".

Your box light with the mono diodes has a very nice spectrum. If you could get that up to above 2.0µmoles/watt and the price down a bit you'd have a serious contender :peace:
 

Doomboy15

Well-Known Member
I have the hlg 650r in a 5x5....I keep my light like 3 ft above during flower. That light is hella bright and will burn your plant. I start flower around 500w then slowly turn it up during stretch. Soon as they stop stretching, set at 3ft or as close as i can get it and full blast the light. I pull 666 from the wall full blast. Veg is tricky but you need more space between canopy and light. I had mine at 50% throughout veg and raised the light as the plants grew.
 

gbis59ll

Well-Known Member
I have the hlg 650r in a 5x5....I keep my light like 3 ft above during flower. That light is hella bright and will burn your plant. I start flower around 500w then slowly turn it up during stretch. Soon as they stop stretching, set at 3ft or as close as i can get it and full blast the light. I pull 666 from the wall full blast. Veg is tricky but you need more space between canopy and light. I had mine at 50% throughout veg and raised the light as the plants grew.
What yield from both light
 

Doomboy15

Well-Known Member
I kept my 650r like 3ft above and ran it @ 100% with no problems at all... with a lil lst training you can keep em short so that 3ft isn't a problem. 20210322_181925.jpg
 
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