message to garden knowm

thanx for the help but i gotta ask you one or 2 more questions.. What is the OLH (optimum light height) of a 250W HPS noting the fact that i will not have any ventilation taking the air out of the room. will put a coupla fans to keep the heat down and was planning on using CO2 supplementation since it helps the plant tolerate higher heat.

thanx
alkbud Reviewed by alkbud on . First Time Grower Needs Help with Growroom!!! first time growing and first time to post...plz help. growroom dimensions = 150cm/5ft Height x 60cm/2ft Width x 60cm/2ft Length light specs = 250W HPS first i need help on making a reflector for my 250W HPs since here in senegal you cannot find reflectors for 250W HPS weirdly enough, you find the bulbs and ballast but not the reflectors. In my total growroom height of 150cm, 30cm is already taken by the pot height and another 30 cm max at the top to maintain the maximum light intensity Rating: 5