Now, how are you going to deal with the heat the light generates ? Will you want a light that burns MH or HPS bulbs? Do you want to use a digital ballast which costs a little more to buy, but uses less energy so it pays for itself? And, a digi ballast will run MH or HPS. Thus you only need one ballast.

Or you can use conversion bulbs, but I dont know much about those. Thats not how I did it. So I never really researched it.

Those pots are most likely 18-24" apart. You are going to need an area that is at least 2.5x8 feet. Thats 20 sq. ft. How many lumens does a HPS 400, 600, and 1000 give? We need to know that to figure what is best for you. I am going to go out on a limb and suggest a 1000 watter which gives you 145,000 lumens, or 7250 lumes/sq ft. That will give you some real nice buds. They say 3000-5000 lumens per sq ft will do, but the experts do not agree.

You could veg with the higher Kelvin CFL's and use your HPS for flower only if you wanted. HPS is not all that great for vegging. Hmmm, I wonder why ?

If you are going to use an air cooled sealed hood, you need to bring in fresh air from outside your grow area, blow it thru your light, and exhaust it back out of your grow area. You will need two high quality fans in order to do this. Any HID lighting system will give off a great deal of heat that will become an issue within about 10 minutes of it being on.

That is the very reason many use portable A/C units in their grow rooms as well as vent thier lights to keep temps in the optimum range.

Well, you can digest all this and make a decision now. Honestly, the very question I just answered is all over the site. Learn to search the topics. There are many others here who can answer questions much much better than myself. But, my info is accurate or I would not respond.

b0nger
bongerstonerd00d Reviewed by bongerstonerd00d on . NEED HELP WITH LIGHTING??? While finally we have decided to go with this unit here http://www.meadowviewfeedandgarden.com/product.asp?P_ID=132 and was hoping someone here can suggest the proper lighting for this size unit , we hope to go with 400 or 600 watt bulbs , but wanted to know how many we may need for this unit for proper grow with it. Jamie Rating: 5