Max watt power on my grow area?

toasterpower

toasterpower

Member
So im building a room of 10ft by 16ft. It will be sealed, and i will buid a mini mother/clone room inside of it of 3ft 5ft. The actual grow area will be 15ft by 5ft. The rest of the room will be use for storage/gear.

My question is, how many HPS watt can i install/would be optimal for an area of 15x5? A/C is not bought yet, but it will be a 24 000BTU thru wall unit. And bulb will be in cool tube vented outside!

thanks!
 
smokinrav

smokinrav

Well-Known Member
Your room measurements make no sense to me. Maybe I'm just stoned, but even so Im usually pretty good at basic math...
 
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Sh@man

Member
Since the room is so big you should look into a moving light rail. It can save you alot of money on electricity.
 
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spek9

Well-Known Member
smokinrav, I had to read it a couple of times myself, but I get it now... and I'm not even stoned ;)

Light mover is a good idea, but if electrical cost isn't an issue, three 1Kw lamps would be ideal in that space; you'll get perfect coverage, and have wonderful points of overlap.

-spek
 
toasterpower

toasterpower

Member
The thing is i already own 2x 700watt hps only ballast. I was thinking about adding 3x 1000w hps, for a total of 4400watt.... I will fry them?

So let's say i only add 2x 1k, i will have 3400watt... still too much?

At first i wanted to add 3x 1k mh/hps ballast so i can use 3000w of mh for veg, then switch them to HPS and power up my 2other 700w for a total of 4400w... But, i think, having only 2x 1k of mh for vegging a 5x15 area is insufficient...

Trying to keep the ballast expense low here....
 
BeastGrow

BeastGrow

Well-Known Member
You could probably max out around 7k.... 5 1000w HPS cooltubes with reflectors and 2 1000watt cooltube vert.
 
trueweedsmoker

trueweedsmoker

Well-Known Member
you need 40 watts minimum but 50 - 60 watts and even more to really produce,....thats a square foot. i dont think its a such thing as too much light just the problem of exhausting the heat. also a 24000 btu wont do it you will need mmore air to cool that kind of room
 
toasterpower

toasterpower

Member
trueweedsmoker said:
you need 40 watts minimum but 50 - 60 watts and even more to really produce,....thats a square foot. i dont think its a such thing as too much light just the problem of exhausting the heat. also a 24000 btu wont do it you will need mmore air to cool that kind of room
Click to expand...
Well if i apply the ''rule of thumbs'' of 3500btu per 1000W... With 5400watt of ''outdoor air cooled'' (4400watt + 1000watt for the mother/clone) im at 18900btu... my AC unit will be a 24000, im safe? no?
 
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Blackmore1

New Member
Why use hid on your mothers andclones. Use cfls or t5s.

As for flowering. Its best to keep a 1000w on a 4x4 spread to get max yield.
If all your lights are air cooled (separate from room) and box is sealed....a 1 tonne AC should suffice.
plus add co2, ofcourse. Thats the one upgrade youll really benefit from in a sealed room and higher temps.
 
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