1000watt same as 4 250watt?
- Thread starter xHaze21x
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Londoner
Well-Known Member
not sure, a 1000w actually pulls a bit more than 1000w from the wall socket as do 250s pull a bit more than 250watts, at a guess id say 4 x 250w would probably use marginally more than 1 x 1000w? hopefully someone with a bit more electrical knowledge than me can give you a better answer. or you could find out the total power consumption consumed by the 250 and 1000w ballasts and lamps on the internet?
MajoR_TokE
Well-Known Member
Volts x amps = actual power used. Four 250's will draw about 1200w total, and a 1000w will draw about 1140w total. The 1000w will put out more lumens using less power.
Seamaiden
Well-Known Member
This is how subcool figures HID lighting (he said this is for all HID lighting, it's not specific to MH or HPS).
1000 Watt Hoods…………6x6
600 Watt Hoods………….5x5
400 Watt Hoods………….4x4
250 Watt Hoods………….3x3
You can find it in his Canopy Management thread in Subcool's Organics.
1000 Watt Hoods…………6x6
600 Watt Hoods………….5x5
400 Watt Hoods………….4x4
250 Watt Hoods………….3x3
You can find it in his Canopy Management thread in Subcool's Organics.
MajoR_TokE
Well-Known Member
No one can really answer that for you, it's up to you. What are the dimesions of you grow area? Look at what Seamaiden posted, each 400 would cover roughly 4 x 4 or 16sqft, a 1000 would cover 6 x 6 or 36sqft. Do you have a height restriction? The 1000 may need more head room. There are many other variables.
Londoner
Well-Known Member
as i thought, good info mate.
again good info pretty much everything you need to know in these two posts.... i use my 600 in a 1.2 x 1.2 x 2m room
Trey57
Well-Known Member
Ain't that the truth!!
MajoR_TokE
Well-Known Member
Ballz Deep. 
Seamaiden
Well-Known Member
Yeeow! That's what I keep telling my husband.yep, its all about deep penetration
iloveit
Well-Known Member
Yeeow! That's what I keep telling my husband.
My day was quite dull until I read your one liner. LOL!
MrFishy
Well-Known Member
How far should a guy start his 600HPS away from the tops? Is there a "safe zone" where it's not perfect, but close, where a guy could/should start tuning in, with zero/low burn danger? With just a fan blowing on the fixture and area?
So it always cost more to run more fixtures? That makes sense to me.
So it always cost more to run more fixtures? That makes sense to me.
poppinsmokey
Well-Known Member
It really depends on your conditions. I just got a 600W HPS (uncooled reflector in a CLOSET). I had 5 plants under it that were vegged for 2 weeks under flouros. I started the HPS at 30" above my girls. The temps actually went down from where they were at w/ CFLs. So I got ballsy, and dropped it to about 18". Day 1: looked good but I didn't notice any new growth. Day2: woke up to find one plant badly burned in only 86 degree heat. All others were showing mild signs of heat stress.
I raised it back to 30", and the plants quickly recovered. I vegged for 1 more week under this light with an average distance from bulb to canopy of 22.5". FWIW my ambient temps in the room the closet is in run about 71 - 74, the closet runs 78 - 84 with lights on. I have 2 fans in the closet.
Long answer for a short question huh. I'd start it at 30" and drop it 4 - 6" every day or two. If your plants are young, I'd prolly just use flouros or CFLs to veg.
I raised it back to 30", and the plants quickly recovered. I vegged for 1 more week under this light with an average distance from bulb to canopy of 22.5". FWIW my ambient temps in the room the closet is in run about 71 - 74, the closet runs 78 - 84 with lights on. I have 2 fans in the closet.
Long answer for a short question huh. I'd start it at 30" and drop it 4 - 6" every day or two. If your plants are young, I'd prolly just use flouros or CFLs to veg.
edux10
Well-Known Member
I would think this has a lot to do with it as well as the overall environment of course.
The more light footprint you have the more plants you can fit in there. You also have to figure about the amount of lumens being distributed. A mean a 250watt could like a 10x10 room to you eyes to be able to see but you really have to figure out if you plants have enough light to grow in.
I think that chart is pretty much right on. I do use a 600watt in a 4x4 though and I figure it may give them a little more than they need but I don't think I would really get more bud off them but just to be on the safe side with everything. Better be better off than lacking right?
I also figure with it this way I would be able to grow my plants bigger and this brings us to the next thing would be plant size. You can get by with using less lumes on plants that are small rather than big. If you have a smaller lamp and big plants I am not sure that your bottom branches will be getting the light that they would need to fully develop. This can be gotten around by either growing a lot of small plants or perhaps lollipopping the plants. I don't know and am still experimenting.
Im my situation I am growing my plants bigger under the 600watt in a 4x4 area. I will lollipop them too so that there is maybe 6 to 8 cloas with one being the biggest. Say if you had a 400watter you might not be able to get away with this aswell. You would be better off either getting a screen and screen out one or two plants or doing a sea or green (by that I mean just having a lot of small plants)
If you have a lot of small plants of a really good canopy you can get the light right close to the tops (get it close too cuz the 400watters run pretty cool). That is a whole nother issue is the heat givin out by these lights, and with more and more people using those grow tents, the HUTS GET HOT!!! I could go on for a while about that too.
So basically just be as effeciant as you can with the light you are given. Smaller lights = get them close to the canopy and use all the lights at the point where they are the brightest.
Bigger lights= may give you better penatration and better ability to grow bigger plants but you have other issues that go along with that such as heat and electricity usage.
I also saw a chart on RIU going around that shows how many lumens your light looses as the plants get further away. It was saying at like 4 feet is is like 1/32 of the bightness. Im not sure if it was that exactly but it was a substantial loss, sometimes if you just bring the light down by 1/2 the space you can double your yeild. A lot of people have the lights to far away. Be careful not to burn but if you spend the time with your room it will be no problem. Just get a thermometer and hang it at the canopy and watch it for an hour. If it gets to 120 then you need to back off your light a lot. If it is 98 you can tinker with the light and rase it a couple inches put a fan on the light and then check it again. It just takes a little effort and time in your room and it will be good to go.
Londoner
Well-Known Member
i go from 2 h/power cfls for veg to flower under a 600 in cooltube when theyre 18-24" tall and i start it around 2' from the tops then bring it down an inch every other day till its about 8-10 above the tops, i find any closer and it doesnt burn but it starts to light bleach the green out of the tops, and i dont get a good enough spread of light to cover the whole room any closer than 8", but this is partly because cooltubes probably have the worst spread of light of all the air cooled reflectors, i plan on buying one of the larger air cooled reflectors soon. but i have started seeds under the 600, 3-4' above them is fine, then bring it down as theyre growing.