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What size HPS Light for my small Tent?

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I have a 2x2x5'3" Tent for Flowering.
What is the ideal sized HPS for this tent?
I currently have a 150w HPS, but should I get a
bigger light, such as a 400w?
Thanx!
 

shuggy4105

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Try and get a dual-ballast; MH for veg and HPS to flower, is said to work best;) I`m agreed on the 400w too:)
 
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I do not like MH lights and do not use them at all for vegging any more. I recommend T5s for vegging. They put out about the same lumens per watt as a MH, but run substantially cooler.
 
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For vegging, I'm actually pretty satisfied with using 6500k CFLs. But I want the strongest HPS I can adequately cool
for flowering in my Tent
 
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medicalgrowman said:
For vegging, I'm actually pretty satisfied with using 6500k CFLs. But I want the strongest HPS I can adequately cool
for flowering in my Tent
CFLs work too, they just put out about 33% less lumens per watt and more heat than a T5, so cost about 33% more to operate every month.
 

shuggy4105

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I was speaking only in the context of MGMan saying he was set on HID...;)
 

OGKushman

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The Hemp Goddess said:
CFLs work too, they just put out about 33% less lumens per watt and more heat than a T5, so cost about 33% more to operate every month.
Thats only true for the actual lighting.

People always forget about the AC and vortex fan needed to run the lights safely.


For Me: 2000 watts of light need 121watts of vortex fan power and 1200 watts to run my A/C, another 88 watts to run my fan inside the room to blow on the lens (Not a requirement)


I do agree with THG, just pointing it out that with HID, usually more energy is needed for cooling.
 
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I ended-up buying a used 250w HPS for cheap on craigslist.
It is one of those self contained units with the ballast
and reflector all in one. It is really big and heavy!
So-much bigger and heavier than my 150w hps!
I think I am going to separate the ballast using a long piece of heavy-duty extension cord
to make a remote ballast. I think I'll keep the ballast outside of the tent to aid cooling.
Then I will order a CMH bulb, because I've read lots of good things about those bulbs!
I'll keep an eye on the temperature and upgrade the ventilation accordingly if needed.
How's that sound?
 

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