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I was just wondering if anyone had used one of the D2S bulbs that are in newer car headlights? They are 4300k and they have their own ballast. They are also only 12v so you could run them from a computer power supply. They give out 3200lm according to the spec sheet and they are now very...

Hey hey, If I was to build a small veg cabinet could I use a carbon filter that was designed for a cooker extraction hood? I would have it mounted over the exhaust outlet. It would fit and its cheap but I do not know how well it would work. Thanks Fonzie

Hi all, I am a long time lurker, first time poster and had a question. A grow box in an attic will get pretty cold in the evenings during winter. Would I cause any negative outcomes if I took air from the extractor fan im my bathroom and ducted it into the computer fan driven intake of a grow...