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in this months issue of high times there is an article about LED lighting taking over HPS for best grow lights. I'm not sure if I agree about this, the LED lights are more expensive but use less electricity but it seems like the HPS light systems would yield more. anyone have any experience...

http://www.hydroempire.com/store/product_info.php/cPath/3_20_53/products_id/986 im looking to get a high pressure sodium light system this is the one I'm considering. It has a switchable ballast add on to be able to also run MH for an additional 30$. is this a good value? this website has...

i never grew high grade i have only experimented growing beasters with seeds i found. what are the highest yielding high grade strains??