What would be the best bulbs for this Purple Reign Horticulture 4ft. system. I have two 54 watt "daylight" 4ft bulbs in there now. please tell me what I need for ultimate growth and bloom for my succulents and cacti. I've heard all kinds of opinions on what's best and I'm confused. I was thinking of getting 54 watt bulbs again but getting 1 daylight and 1 cool or warm????? I dont know!!