Is it a stupid idea? Heat management.

Hi everyone,

Please see the attached picture and give me a feedback.

Basically I had problem with the heat, I have extractor but still...

I’ve fit a plastic foil just under my led-s, as most of the heat is coming from the light on the sides...

So I put that plastic foil there and this is just amazing, on a way that the difference (in Celsius) is around 12+ between the bottom part of the tent and the top.

My question:
Does the foil decreasing my light intensity?
If yes, on what level???

I have a 1mx1mx2m tent.

My personal opinion is that it’s tottaly fine, my ladies are okay.

I share it because there are many people (probably) who have heat issues even with leds.

Maybe they can come up with something similar for their tent.

Thank you

See every wrinkle, every reflected bit, every blurred bit? That's diffusing your light so, yes, you will be decreasing intensity and likely by a considerable amount. Can't you raise your light a bit?

get a fan in there blowing in between your lights and plants. If you are using led cobs with heatsinks, get a fan to blow over the heatsinks.

It would be interesting to see how you have the tent set up

zooolcsi said:

Hi everyone,

Please see the attached picture and give me a feedback.

Basically I had problem with the heat, I have extractor but still...

I’ve fit a plastic foil just under my led-s, as most of the heat is coming from the light on the sides...

So I put that plastic foil there and this is just amazing, on a way that the difference (in Celsius) is around 12+ between the bottom part of the tent and the top.

My question:
Does the foil decreasing my light intensity?
If yes, on what level???

I have a 1mx1mx2m tent.

My personal opinion is that it’s tottaly fine, my ladies are okay.

I share it because there are many people (probably) who have heat issues even with leds.

Maybe they can come up with something similar for their tent.

Thank you

Click to expand...

I think its a very bad idea.. optic (glass for example) usually reduce light intensity by a good 10% on LED and they are made for that.. so I imagine with what you put there it would be even much more.. probably in the 20+% not worth it IMO id take it out right away if I was you

Viceman666 said:

I think its a very bad idea.. optic (glass for example) usually reduce light intensity by a good 10% on LED and they are made for that.. so I imagine with what you put there it would be even much more.. probably in the 20+% not worth it IMO id take it out right away if I was you

Click to expand...

Of concern is also this 12°C heat differential, where is that going? Won't be helping the LED as the ambient there rises.

Pot plants can do fine up to a temp of 90 Fahrenheit with a humidity level of around 50%, after that growth will slow and stress related problems will occur. One advantage of LED's is that they produce some heat, but no where near the heat from HID. If your tent gets over 90 F, then you have issues which I can't imagine happening with LED's.
Scratch the plastic wrap, it will be bad for your plant growth, instead focus on increased ventilation, like simply stick a oscillating fan in your tent, and move the fuck out of the air in the tent.
You will be fine.
Good luck.

Fubard said:

Of concern is also this 12°C heat differential, where is that going? Won't be helping the LED as the ambient there rises.

Click to expand...

Can you convert from C to F? I'm not familiar with Celsius.

Jimdamick said:

Can you convert from C to F? I'm not familiar with Celsius.

Click to expand...

°C to °F

Multiply by 1.8 and add 32.

In this case we're talking 53.6°F differential between top and bottom with the plastic in place.

For °F to °C, it's minus 32 then divide by 1.8. Or use google

Fubard said:

Or use google

Click to expand...

Thanks for the tip.
Oh, and if you have a 54 degree temp difference in your tent (????) from top too bottom, that's insane.
You need more ventilation.

Jimdamick said:

Thanks for the tip.
Oh, and if you have a 54 degree temp difference in your tent (????) from top too bottom, that's insane.
You need more ventilation.

Click to expand...

It's why we need to know his tent layout, because there's no way, imo, that's normal and there should be enough head room in a 2m, 6'6", tent.

To the OP, I see two switches on your light, are they both on? Turn one off.

I just seen the pic

It sounds like you don't have an intake and if that's your extractor on the floor, it needs to be moved up high in the tent.

The air needs to be exchanged. An intake would go at the bottom of your tent.

Unless your extractor fan is at the bottom of the tent, it seems impossible to have that temperature differential. Heat rises, so you'd want your extractor fan at the top of the tent.

That plastic will cut the light a lot more than glass and has to go.

A 12 degree C difference in temp is a 22F difference not 54. lol 32C=90F and 20C=68F for instance.

C to F or F to C conversion.

OldMedUser said:

That plastic will cut the light a lot more than glass and has to go.

A 12 degree C difference in temp is a 22F difference not 54. lol 32C=90F and 20C=68F for instance.

C to F or F to C conversion.

Click to expand...

not only that but its traping heat with the led which is very bad for them. expect diodes to fail much earlier

Do you have your thermometer in direct light? If you do move it to the side of your tent at the height of the canopy and see if it changes.