Right, so, I got an HPS with integrated hood and ballast from eBay. I've read that I shouldn't veg under this light, that I want a more blue light - firstly, am I right in thinking this? Now, I also read that HPS lights are always E40 fitting bulbs - T/F? If so, can I get a more blue spectrum bulb with this fitting to put in for veg, then put the red one in for flowering? If so, can someone recommend one that'd fit?! Cheers guys, sorry bout all the questions!