Mixed LED/HID growers. What temperature?

Mike6326 said:

I have been growing inside in a tent for several years now. I use HID lighting with my main problem being heat generation and the ability to remove the heat from the tent. Recently I have been researching LED lighting to replace the HID. I Looked to all the major manufacturers but very few had info on radiant heat from the lights. I was convinced that I was going to invest in the Spider Farmer SF7000 for a 5x5 tent. I went to their site and found a video explaining the light distribution at certain heights above the plants. During the video the instructor goes to the top of the plate that hold the lights and mentioned out of hand " you cannot lay your hand on the back of the light as the temperature runs about 140 degrees F." How can you grow anything in a tent with that temperature flowing freely off the top of your light. Good HID light fixture have enclosures so you can remove excess heat. I have no problem touching my Sun Spectrum hood, temp rarely gets above 85 degrees on the outside. I see no advantage to mixing your lighting other than you will have more heat. I'm from the south, heat is my main problem. I'm attaching a couple of samples! Enjoy! By the way, the purple is caused by temperature range from 65 - 78 degrees in the tent during the last 3 weeks growth.

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Mike6326 said:

5x5, usually 8-9 plants at a time

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farmingfisherman said:

Two 100 watt led boards and a 315 cmh in a tent made for a really warm 4x4 without much effort, to much actually once outside temps began to warm up.. How much space are you covering?

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Groplanner LED Grow Light | Full Spectrum | Groplanner.com

Groplanner LED grow light O series is a Full Spectrum light for seeding veg and bloom indoor. The grow light is high energy efficiency & low running cost with 3030 type chips. And it is dimmable with smart App control. We provide 3years of after-sales service.

hi-hyperlite.com

.Smoke said:

I'm thinking of mixing 400w of led along with a 1kw se hps and was wondering what temperature you guys have found is best for mixed lighting?

Stick to 75F for the HID, or closer to 85F for the led?

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Mike6326 said:

I have been growing inside in a tent for several years now. I use HID lighting with my main problem being heat generation and the ability to remove the heat from the tent. Recently I have been researching LED lighting to replace the HID. I Looked to all the major manufacturers but very few had info on radiant heat from the lights. I was convinced that I was going to invest in the Spider Farmer SF7000 for a 5x5 tent. I went to their site and found a video explaining the light distribution at certain heights above the plants. During the video the instructor goes to the top of the plate that hold the lights and mentioned out of hand " you cannot lay your hand on the back of the light as the temperature runs about 140 degrees F." How can you grow anything in a tent with that temperature flowing freely off the top of your light. Good HID light fixture have enclosures so you can remove excess heat. I have no problem touching my Sun Spectrum hood, temp rarely gets above 85 degrees on the outside. I see no advantage to mixing your lighting other than you will have more heat. I'm from the south, heat is my main problem. I'm attaching a couple of samples! Enjoy! By the way, the purple is caused by temperature range from 65 - 78 degrees in the tent during the last 3 weeks growth.

Click to expand...

.Smoke said:

It's a 4'x8'.
It would be 2- 600w hps and 2 of these...(300w not 400)

Groplanner LED Grow Light | Full Spectrum | Groplanner.com

Groplanner LED grow light O series is a Full Spectrum light for seeding veg and bloom indoor. The grow light is high energy efficiency & low running cost with 3030 type chips. And it is dimmable with smart App control. We provide 3years of after-sales service.

hi-hyperlite.com

Basically, pull the middle hood out and replace with the leds...
View attachment 4858367

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Rurumo said:

LEDs honestly aren't much cooler watt for watt, they just produce less ir and so cooler leaf temps, so the hot air rises and you just vent it out. The cooler temps come in when people are replacing a 1,000 hps with a 600 watt led...of course it's going to be cooler, derp. I love mixed lighting setups, I've seen some mixed cmh/led that produces beautiful quality buds. Drivers do get hot though, so to take full advantage of the reduced heat of LEDs you need to mount those puppies outside the tent.

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