1000w Hps in a 4x4 Tent
- Thread starter PurpleONE
- Start date
Little Tommy
Well-Known Member
You may want to go with a 600 watt unless you are planning to air cool the light.
1k is ideal for 4x4. i have two in a 4x8. just get air cooled hood and good inline fan and place the tent in a room that has air conditioning.
Do u run an additional portable ac or window unit? I had 2 4x4 tents with a 1000w hps in each 450 cfm Exaust and 320 cfm intake temps rose above 90f in the tents?
If I tent grew again I would just do a 600 watt and make sure u keep your ballast outside the tent
Do u run an additional portable ac or window unit? I had 2 4x4 tents with a 1000w hps in each 450 cfm Exaust and 320 cfm intake temps rose above 90f in the tents?
If I tent grew again I would just do a 600 watt and make sure u keep your ballast outside the tent
Gastanker
Well-Known Member
I ran a 1kW in a 4x4 and found it to be a bit overkill most of the time. If you can grab a 1000w Dimmable to 600w and use the 600 for most of the grow and 1kW just at the end. I'm running a 600 dimmable to 400 in mine and might throw my 1kW on at the end - maybe. Problem I found is getting it high enough from the canopy. 4x4x6.5 with 3.5' tall plants and a 1' thick light hanging down 6" (pretty hard to mount it at the very top) means your light is only 1.5' from your plants. That is pretty close for a 1kW even aircooled.
i have a 600w digital euro reflector with a 6" inline fan and an external portable ac in the same room as the tent.
plenty of light and it still gets warm but running the ac is expensive if i do it all thetime.
sorry i just took a bong rip, my tent is 4ft by 4ft but 6 ft tall
plenty of light and it still gets warm but running the ac is expensive if i do it all thetime.
sorry i just took a bong rip, my tent is 4ft by 4ft but 6 ft tall
gostealth
Member
so i just set my 4 x 4 tent up have 2 4" inline fans one to cool the light and one to bring cool air into the tent and the light is a 600w i am only doing 4 in this space but will be around a qp each better in my eyes for the space reasons i also have fans in most of the corners cause circulation is key no matter what i bought a portable ac but am only going to use when the temperature is out of control. i will post some pics here soon go to get my camera back.
rzza
Well-Known Member
first off its not overkill, not by opinion or fact. anything bigger than 4x4 should have more than a 1k. a 1k footprint IS 4x4.
second, we (as indoor growers) try to replicate mother nature. naturally, the sun gets brighter in summer and less bright in fall. that said, you should be using the 1k during the whole grow but if your gonna dim it, dim it in the end not the beginning.
rzza
Well-Known Member
yes i mentioned that also, make sure the main room is air conditioned.
Gastanker
Well-Known Member
Not going to argue that the foot print of a 1k is 4x4 but remember that this is in a tent. You essentially have reflectors encapsulating the entire area which greatly ups the lux of the area compared to growing on tables in the middle of a room. Same happens with heat and again keep in mind the low ceiling. A scrog or short sog might work with a 1K but with tall plants you are going to run into problems without AC (I did this and its rough). 2 1Ks in a 4x8 is fairly managable - same volume to light but MUCH more managable.
I up to a 1k at the end while dropping hours to 10 on. In nature light intensity doesn't decrease significatly at the beggining of winter, just the length of the day. Growing with smaller lights at the begging doesn't lower lumen as the lights are closer and covering a smaller foot print - this just keeps it equal as the plants grow larger and are moved further apart from eachother.
Little Tommy
Well-Known Member
I think the bigger factor is that it is in a tent. I think it is hard to control the temps when you are not venting in from and then out to different rooms. I run central air in the summer and sometimes my temps still go higher than what I would prefer and I have a room that is 2x the size of that room with air cooled hood and 8' ceilings..
Temperature hasn't been a problem so far since it is in my cold garage. I have 8 just starting veg. I actually had to put a heater in there to keep it from being below 60 degrees. The tent requires any 600 or 1000 watt to be air cooled so I'll plan on getting one of those. How much of a temperature rise can I expect with a 1000 watt? This is my first indoor grow so I'm just trying to get something put together
Gastanker
Well-Known Member
Temperature hasn't been a problem so far since it is in my cold garage. I have 8 just starting veg. I actually had to put a heater in there to keep it from being below 60 degrees. The tent requires any 600 or 1000 watt to be air cooled so I'll plan on getting one of those. How much of a temperature rise can I expect with a 1000 watt? This is my first indoor grow so I'm just trying to get something put together
I had a rise of ~ 15-20 above ambient pulling about 330 cfm through the light. If you are immediately venting to the outside and live in a cool area it is manageable. Remember that if you vent to the room the tent is in the ambient temp will go up as well.
rzza
Well-Known Member
i used to run a 1k in a 4x4 and its easier to cool than the 4x8 with two. yes the sun is brighter in the summer. a 1k footprint IS in fact 4x4, no bigger.
its okay if you dont know what your talking about, just stop digging deeper
http://in.answers.yahoo.com/question/index?qid=20080915205641AA3UdMp
http://www.themarijuanaforum.com/forum/showthread.php?t=280
this is the 4x4 i was talking about let those dude fight and hit me up with the progress of the 8 or whatever and i will do the same with my 4.
SimplyM1tch
Member
I'm doing it have been for 6 months, my average temp is 78 and I live in so cal, just DON'T skimp out on ventilation iv got a 8" vortex some say its overkill but I just put a speed controler on it and run it at half speed most the time
Flo Grow
Well-Known Member
A 600w would be more ideal in your tent.
More effecient and bang for your buck than a 1K anyday of the week.
Any grower that has done their homework with lights WILL NOT argue against that.
Yes, the "perfect" footprint for a 600w is 3 x 3 BUT it can go UP TO AND NO FURTHER THAN 4 x 4 !
That would be 4 x 4 up to 5 x 5 for a 1K.
Play around with your fan, light and ducting to see what fits YOUR environment (including the room and building the tent will be in).
After changing mine numerous times, I ended up getting the best environment by doing the unexpected.
My 6" Can Fan sits outside AND on top of my tent, venting STRAIGHT up into my attic via 3ft of RIGID ducting.
Out of 3 flaps for passive intake, the 2 furthest from my fan are open and not the one directly underneath it.
I also removed the glass lens from my Sun System Yield Master II 6 inch hood, with just a small clip on fan hanging close by and blowing dirrectly on my bulb.
I have excellent negative pressure and my inside ambient temps (79F/80F) ALWAYS stay 4 - 5 degrees above the room the tent is in (83F/84F).
It's not just about:
Tent size, Bulb wattage, Fan size, type of hood and ducting, but also the KIND of ducting.
So many growers either under estimate or never really consider the type of ducting they use.
The MORE and the BIGGER the ridges/grooves, the LESS air flow.
The MORE bends, the LESS air flow.
GoStealth, I like some of your set up and seriously glad/cool that the temps are right for you.
But you are getting killed in the overall air flow department with all those bends and especially the shear length of it all.
I promise if you shorten it and change the "type" of ducting where need be, you'd get way better cooling !
I used duct tape to hold my duct work compacted when I had to shorten it (raising the hood), and then let it loose as need be when my light had to move (lowering the hood).
JMHO
More effecient and bang for your buck than a 1K anyday of the week.
Any grower that has done their homework with lights WILL NOT argue against that.
Yes, the "perfect" footprint for a 600w is 3 x 3 BUT it can go UP TO AND NO FURTHER THAN 4 x 4 !
That would be 4 x 4 up to 5 x 5 for a 1K.
Play around with your fan, light and ducting to see what fits YOUR environment (including the room and building the tent will be in).
After changing mine numerous times, I ended up getting the best environment by doing the unexpected.
My 6" Can Fan sits outside AND on top of my tent, venting STRAIGHT up into my attic via 3ft of RIGID ducting.
Out of 3 flaps for passive intake, the 2 furthest from my fan are open and not the one directly underneath it.
I also removed the glass lens from my Sun System Yield Master II 6 inch hood, with just a small clip on fan hanging close by and blowing dirrectly on my bulb.
I have excellent negative pressure and my inside ambient temps (79F/80F) ALWAYS stay 4 - 5 degrees above the room the tent is in (83F/84F).
It's not just about:
Tent size, Bulb wattage, Fan size, type of hood and ducting, but also the KIND of ducting.
So many growers either under estimate or never really consider the type of ducting they use.
The MORE and the BIGGER the ridges/grooves, the LESS air flow.
The MORE bends, the LESS air flow.
GoStealth, I like some of your set up and seriously glad/cool that the temps are right for you.
But you are getting killed in the overall air flow department with all those bends and especially the shear length of it all.
I promise if you shorten it and change the "type" of ducting where need be, you'd get way better cooling !
I used duct tape to hold my duct work compacted when I had to shorten it (raising the hood), and then let it loose as need be when my light had to move (lowering the hood).
JMHO
Flo Grow
Well-Known Member
+REP, Eoddom for the idea !
That would come out better than a stationary ANYTHING, let alone a 1k ligt.
