LEDs for lettuce and microgreens

R

ROF42

Well-Known Member

• Mar 9, 2015

• #141

How far above the plants should these vero 10s be?

 

bicit

Well-Known Member

• Mar 9, 2015

• #142

Keep them pretty close,4-8" depending on how the heat is.

 

R

ROF42

Well-Known Member

• Mar 9, 2015

• #143

The room ambient is 78 or so average. I had the leds sitting right on the humidity domes. Didn't melt the plastic but did increase condensate where the lights didn't shine. Anyway didn't get good light spread/coverage so I put them the lowest I could on the chains.

Not sure how much light the domes reflect back or absorb, they need to be removed soon but hoping for stragglers to come out. Anyway I thought the tomatoes seemed tall for having the light right on them



I picked up some maxicrop to foliar feed the seedlings

 

R

ROF42

Well-Known Member

• Mar 17, 2015

• #144

My room has climbed up to 84 degrees. The lights have been on 24/7 all this time. The 6" x 2" heat sinks are warm to touch and don't want to leave your hand there too long. Probably want bigger heat sinks for constant running, maybe even part time.

 

PSUAGRO.

Well-Known Member

• Mar 17, 2015

• #145

ROF42 said:

My room has climbed up to 84 degrees. The lights have been on 24/7 all this time. The 6" x 2" heat sinks are warm to touch and don't want to leave your hand there too long. Probably want bigger heat sinks for constant running, maybe even part time.

Click to expand...

adding active cooling is an easy/quick fix for the heatsinks..........won't help your room temps though obviously.

 

R

ROF42

Well-Known Member

• Mar 17, 2015

• #146

Yeah I'm not too worried about it. Just thought I'd share the info for those keeping up, add to the collective knowledge for whatever it's worth

 

DonPetro

Well-Known Member

• Mar 17, 2015

• #147

I have 5 Vero 10s each on their own 9"x1-1/2"x1/8" chunk of flat aluminum driven at 320mA and they are BARELY warm to the touch. What TIM did you use? What are you driving them at?

 

R

ROF42

Well-Known Member

• Mar 17, 2015

• #148

~300mA. I haven't actually tested them.

This heatsink at 6" long
http://www.heatsinkusa.com/2-079/

 

R

ROF42

Well-Known Member

• Mar 18, 2015

• #149

Light bleached, not enough light, or deficiency?

 

R

ROF42

Well-Known Member

• Mar 22, 2015

• #150

I've been wondering about growing a large / tall living tropical vivarium with leds. Somewhere between 6-8 foot tall.

Also looking to light a desert vivarium with them.

Too bad don't have uva and uvb for reptiles. The uv levels of fluorescents fall off in very short distance.