MidnightSun72
Well-Known Member
yeah heat mats... or do what i do,.... liquid cool the leds and run that water into a container inside the tent or a reservoir under the plants, with a few vents, you might need to reinforce that if done underneath. if you have enough lighting you should be able to keep them warm and humid. then get a thermostat to regulate your exhaust fans. 200-300 watts of leds heat dumped into a 15 gallon tank should keep them about 70 degrees and 50% humidity. obviously you will have to top it off every so often. and if you are going to do this you can probably used cheap leds and make your own. as you will probably need the heat spare the lighting efficiency.
Any pics of your liquid cooling setup? No rad just recirculating the water?Maybe I didn't tell exactly what I want to ask...
I know about LEDs need higher temps than HID/HPS, I actually own DIY Samsung Q strips and have experience about it... But in almost perfect environment, so above 27°C, catching VPD, heaters, coolers, humifiders, etc...
I am asking if it's possible (and if plants can be healthy) to grow in 15°C with LEDs, if anyone did it in practice. I guess leaf temps would be at 10-12°C. And what's about feed then, if they transpire less than they would at 27-30°C. I guess feed has to be adjusted to lower temp. But again... can be done at those temps?