hey kid i GOT THE pro! took it from mOM DUkes it was still IN THE box and she has not used. but its not the 24" light. I just started germinating...but 2 your question i was reading in anOTHER forum where they were sayn after the first 2 weeks YOU SHould keep the lights on and dont run the water constatly every 4 hours for 30 mins..they saY u overR wATER roots!...i dont know about that, this is my first attempt ever, if you can keEP me updated thAT WOULD be hot!!