i started the new year off right i flipped the lights on @ midnight 1/1/11 1 am growing in hydroton with ebb grow system i am using sinsi advanced product line i have a 1/4 horse chiller @ 68 5 stage r o system 4 x 1000 hps 1 running now 18 hrs getting ready to turn on second i have 4 wall mounted fans 1 inline can fan 8in.ducted to bring in fresh cool air lihgts are cooled 6in ducts exhausted with 6 in fan a giant carbon scrubber and a ac dehumidifer