After reading about these vs CMH I think I'd be happy with leds due to less heat and energy plus reports of big yields.
However I'm a bit lost as to which ones I get. Totally rubbish at DIY although I might have a go if it's not too difficult. What's this about r specs etc too? I don't want to buy outdated tech. This is for a 2m H x 1.2 x 1.2 space
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