Closet is 10 square feet - will a 150 watt HPS be enough for 3 plants?

5' x 2'

Want to grow 3 nice size plants

Will it be enough?

What if I added some CFL's?

"nice" is not a unit of measurement I'm too familiar with . 150w probably couldn't do 3 plants of any considerable size. If u use a hood it tends to make kind of a rectangular footprint, but I would still think maybe 2 lights to fill the space. I personally would prob do 2x 250+ but I def overkill with the lights. I personally use a 1k watt in a 4x6 room, and can't cover the entire footprint well IMO. would recommend something in at least the 200w range and prob put it on a mover to cover the span, if not 2 separate lights. Depending on your height maybe vertical would be an option with a bulb In the middle. I don't think anything under 600 would be a waste In the space.

1 plant per 100w of light. that is what i do with very good results, but it is not an absolute science. 12 plants under 2 x 600w lamps with sealed hoods.

you would be better with 2 x 150w lamps although i would go with one 400w for the 3 plants and add an extra one making 4 plants total.

3 plants under a 150w will take about a year to grow.

whats a nice size plant then?

not a size you wouldnt want ???

2 250w. 150 thats 15w per sq. ft. not nearly enough. 5 ft is a long spread, my 600w doesn't do that. and a 1000w is a bit overkill for that so you need 2 lights, a mover, or a 4ft 8 tube t5 HO

firsttimeARE said:

2 250w. 150 thats 15w per sq. ft. not nearly enough. 5 ft is a long spread, my 600w doesn't do that. and a 1000w is a bit overkill for that so you need 2 lights, a mover, or a 4ft 8 tube t5 HO

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do not use cfl.

believe me hps is the way to go.
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maybe 2 x 250w would be best but you would get 5-6 plants under there in your long room.

To get 3 nice size plants you may want to look into getting a 400 watt MH/HPS. If cooling is a problem you can get an air cooled hood.

WeeGogs said:

1 plant per 100w of light. that is what i do with very good results, but it is not an absolute science. 12 plants under 2 x 600w lamps with sealed hoods.

you would be better with 2 x 150w lamps although i would go with one 400w for the 3 plants and add an extra one making 4 plants total.

3 plants under a 150w will take about a year to grow.

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"3 plants under a 150w will take about a year to grow" .....lol + rep

tryin said:

To get 3 nice size plants you may want to look into getting a 400 watt MH/HPS. If cooling is a problem you can get an air cooled hood.

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well if your going to get a 400w might aswell get the 600w double the lumens for only half the extra watts and about the same amout of heat.....

I would say get at least 250W for 3 plants

either 2 250's or 1 600. the advantage to 2 250's is the far corners of the space will get good direct light where with a 600 the far ends wont get nearly as much as the middle.
Some high quality reflective material will do alot of good. Nothing wrong with a little overkill on the lights so long as you can control the temperature