400w HPS

theinfected

theinfected

Well-Known Member
If i have this 400w hps with a 6' euro ducting air cooler in it
so i add ducting and eithe pc fan or a ducting fan,
and an extra fan in my closet
2x3x9

how far does the light have to be form the
2-3plants
 
Uhhhh I was gonna say more like 18-24". and I bet you your closet is gonna overheat.

GET A THERMOMETER and put it at plant level (level with the tops). That's one of the best, cheap purchases you can make.
 
may over hear but i will have door open a little, and the lights are air cooled
and i will have an extra fan in closet
 
Ah I was stupid and missed the lights being air cooled. That will make a big difference. Nonetheless, everyone should have at least 1 thermometer in their grow room.
 
i dont understand why people tell me two 200w CFL's wont be enough of light to grow a plant, but
there are hundreds of post that tell me to do this
For veg/grow cycle if your using CFL's (Compact Fluorescent Light) you should be using 26W 6500K and I believe that is the cool white, for flowering 42W or 23W 2700K that is the warm light. 6500K blue spectrum, 2700K red spectrum.
Click to expand...

26w and 42w??? i dnt get it?
 
because there are snobs everywhere ;)

CFL's work... but if you can go HID, do so.

one thing though, i would rather have 10 23 watt CFL's rather than 1 200 watt CFL... this way the 10 lights can surround the plant and stand a chance at good light penetration.
 
ah icic

well yea im ordering 1 400w hps. with air cooled 4 sided reflector
so i think that should take care of 2-3 plants. :)
 
theinfected said:
i dont understand why people tell me two 200w CFL's wont be enough of light to grow a plant, but
there are hundreds of post that tell me to do this


26w and 42w??? i dnt get it?
Click to expand...

Disclaimer: I am not a CFL grower and the following could be very wrong, but I'm pretty sure it's correct haha.

It has nothing to do with being snobs; those people aren't in any way against CFLs. When you buy a '26 watt CFL' (it uses 26 watts of power), it replaces a 100 W incandescent bulb (it goes in the same socket, etc.). That "true power" (26) vs. what it's replacing (100) makes ALL the difference. So when you say '200 W,' I bet you mean a true power of only 42 W. On the other hand, that person you quoted was speaking in terms of the 'true power' (26 and 42 watts).

So those people who are telling you that two 42 watt (200 watt equivalents) bulbs is not enough are right. Sorry my explanation is not great... I hope you get what I'm saying.
 
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