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This my second grow. As you can see, iam growing three plants and iam using a 250w cfl at the moment but thinking of switching to 400w hps since I wasn't too impressed with my first grow ( I got about half oz from one plant). My grow tent is 2.5x2.5x5 feet and I have an small intake fan and carbon filter and exhaust fan for ventilation. I don't have any issues with heat at the moment. I am thinking of buying a 400w hps for flowering but I worry about the heat. Do you think my grow tent is quite small to use hps? Is it worth it or should I stick to the cfls?