I have a diy cooltube from a microwave box, the lamp also has an aluminum reflector, all this is in the box and equipped with a 180m3/h fan for cooling. Below there is one glass and after a 1-2 cm layer of air there is another glass, both of them about 5mm thick. I don't know about the efficiency of heat removal of this technology, but let it be so for now. The temperature has not risen above 33 yet, but I try not to leave one lamp without any blowing or at least a humidifier. So it turns out a 44x66x145cm box covered with two glasses and a lamp at a height of about 150 cm from the floor. And the flower pot itself is on the boxes. This can be seen on some photo in the gallery.
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