I'm ordering several 55w pl-l bright kits from AH Supply to light my orchidarium and was wondering what kind of bulbs to buy for my new fixtures. I'm looking for something near 6500k.They sell some that are 6700k, but I don't know what brand they are. I was hoping someone could tell me if these are good enough or what the best brand(s) are to use. I'd like to be sure I'm using quality lighting. Any help?