Hey everybody! This is my first post but I've been reading in the forum for a while.
The things is I bought a Dragon60 LED panel and as you may know LED lights don't produce much heat, so this is becoming a problem to me. My grow room is 5,5 x 2,2 x 2,2 (1.70 x 70 x 70 cm) with a veg chamber of 2,2 x 2,2 x 2,2 (70 x 70 x 70 cm) and the flowering chamber is 3,2 x 2,2 x 2,2 (1.0 x 70 x 70 cm). It has a passive intraction system in both chambers
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http://www.easy.cl/EASYFO_IMGS/img/productos/mediana/215978.jpg
and the temperature is 16-18 °C most of the time(60.8 - 64.4 F°) So, my question is what is the cheapest system you know that I could implent to raise the temperature????