Cree CXB High Bay light Grow

Dion

Active member

• Jun 24, 2016

• #21

PetFlora said:

When I first got my BML SYPDR 600, a passively cooled design (now gathering dust). The bars got quite hot. I used a fan to blow across them, and made BML aware. Nick wrote back saying that would make them more efficient; as heat is reduced efficiency increases. See Growmau5s new YT video.Cree says running low passively is dumb

Click to expand...

all LEDS run more efficent when cooler, they consume less volts at the same current when hot but emit less light per watt

in the diy world we like to keep leds Tj below 50c, that costs alot so comercial fixtures keep them below manufactures max specification(in this case 85c)

running a pc fan or having the air stirrer fan blow across the sink will increase efficiency by a few % but also increase total watts by a few %

i wouldnt bother in this case

just my 2c

 

M

mg75

Member

• Jun 25, 2016

• #22

Due to space limitations, the fan blows partially on the fixture and partially right above the canopy. I had to get this vertical Lasko fan to make it work.

I like how the plants look and smell, but I am very disappointed with the size of the buds, density and the lack of development on the lower part of the plant.
This was untrained and tops on top of tops, large fan leaves and sucker branches. I did a little clean up, although not enough.
next round is getting a home-made, PVC scrog net and perhaps different nutrients. Soil stays Ocean Forest as I had some on hand.

 

M

mg75

Member

• Jun 26, 2016

• #23

63 days in... chop time

 

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mg75

Member

• Jun 26, 2016

• #24

...

 

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mg75

Member

• Jun 26, 2016

• #25

new beginnings ....

 

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mg75

Member

• Jul 12, 2016

• #26

stretching much more than last time.

 

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acespicoli

Well-known member

• Jan 21, 2018

• #27

Nice grow mg75 im moving into the high bay arena with you!