Cannabis Grow Rooms

I am no electrician and read some where that a 600w light draws more than 600w because there is a % lost in the ballast. ie a ballast that runs at 85% efficency actually draws just over 700w when running and up to two and a half times this on start up. can sombody please enlighten me.

Hey guys, I am in the middle of building a new grow room the dimensions are H:1300mm W:750mm D:500mm and im going to buy a new light either a 400HPS or a 600HPS im leaning towards the 400 because of the heat factor my fan clears 64L per second so its quite a large fan. When i put these dimensins into the OS calculater it came out that i could only have a maximum of 250watt.....? your opinions would be very helpfull.

just wonderin fo summer keepin temps down and airflow usin a phat filter will it be enough? 600 watts of light and i thinkin it wont be cool enough or will it? cheers

I decided to change the position of one of my fans last night when i noticed how hot it was in the middle where the motor is ... this seems quite inefficient - it may even be generating more heat than it cools ! Here's the fan, just as 12mm Sunon that i got from a hydroponics shop http://www.xoxide.com/120mmsunonfan.html Is this a problem with all fans? Ive never noticed any heat from small 25w desktop fans, but their motors are encased in plastic that doesnt touch the motor. I might take it apart tonight and see how it performs, and maybe just use the one 25w fan instead of several Sunons

hey lads quik question for ya's. My situation is I'm runnin 3 x 400ws and 1 x1000w in me room atm and am just over 2 weeks into veg. My problem is I can only run the 1000w for 12hrs of the 18 as i've got another room runnin and the power cant handle it. My Question is which part of the cycle should i run the 1000w, for the first 12 hrs or last? Imo runnin it in the middle would be best but that's not practical. Any thoughts?? peace c

Hello ozstoners long time lurker (since the .cjb.net days) first time whinger Here is a story After putting in about 2g on a student salery towards my grow box over the last 2 years I have continously tried to get it off the ground until just before last christmas I decided it was time to smash my fucking fist into it almost breaking bones and give up..... but now im back! you wont get the better of me hps light! I simply cannot get passed the test stage... HPS goes on, fan goes on, temp goes up 10+ degrees celcius in under 20 minutes The setup 600hps, glass cover, fan attached Square pc fan attached to hood active outtake (larger then) passive intake Things …

Alot of you have seen my grows, a 1 plant box (if not follow the gallery link at the bottom) I currently use 1x 400w hps My next box will be a 2 planter............woah !!!! extending the system I can either run: 1 x 400w 2x 400w 1x 600w I scrog................ so total screen dimentions will be 1200mm x 600mm what are your thoughts. Im not sure on what to buy...........

hi stoners im thinking of buying a new light ive got a 250 watt hps. and im gonna get a 400 watter do any of u no which is better a high pressure sodium light or a metal halide light and do i have to buy a new generator thingy u no u plug ure light in and the wire goes into a box and the wire for th bulb comes out the other end srry i dont no the name but any way do i have to buy a new 1 cheers people

Hi guys, Welcome to my next project. The shed measures about 3000lx2000w over all I want to fill the back half with a self sufficent perpetual growing station with 3 seperate chambers and 4 watering systems. I will be growng organicaly with the pots sitting in a tray of pumice, with a returning irrigation system to a 56L resiovar topped up with a ballcock valve. Room 1 Flowering 1200wx1200lx2000h, 6mm plywood walls lined with Astro foil. 1x 1000w hps with 900wx800l silver dimpled adjusta shade 6mm plywood walls lined with Astro foil 5x 75mm drain pipe inlet vents right side 150mm Westaflex extractor fan with 150mmx1000 carfon scruber (might make my own Thanks Stoney…

any one used this on their lights? does it help so that you can get your lights closer? thanks

hey guys im gunna maybe get a carbon filter dont no if ozone will cut it with black domina any way a couple of questions for u how long does the carbon last?? life span?? is it true that u can just put it out in the sun to clean and reactivate?? wat size would i need 4 a room 2m40 long 1m20 wide and 2m20 high?? do u need to run the fan and carbon 24 hr or can it come on via timer etc?? they are most effective mounted high in grow room?? thanks in advance guys all help is appreciated peace bpa