hps vs hps
- Thread starter thowedoff1994
- Start date
thowedoff1994
Active Member
im feeling like 3 400 watters would cover more space and better yeild than 2- 600's.....but im gonna stand strong saying 3-400 watters will yeild twice as much in a 8x6 space than 900 watts of cfl....so ill wait to see what it will be with the 400's
MrEDuck
Well-Known Member
http://www.hhydro.com/Plant_Grow_Lights_PAR_Testing.html
2 600s will generally do much better than 3 400s.
2 600s will generally do much better than 3 400s.
thowedoff1994
Active Member
in an 8x6???....i dont think so!!
thowedoff1994
Active Member
i did my research .it really doesnt depend on the xtra 40000 lumens 2 600's would give me over the 3 400's ..when i look at it...i can fit more smaller plants in my area and achieve better yeilds
WayBaked
Active Member
Grams per watt isn't really relevant to anything at all until you add a third variable. Time.
Veg for 6 months and that 600W will suddenly yield a ton of g/watt. But the low g/watt Sea of Green next door will harvest 3-4 times in that same time and probably end up with more weight.
thowedoff1994
Active Member
waybaked.....what um stuck on is the length of my table wich is 7 0r 8 feet in length and 5 feet in width...6 or 7 feet from table to ceiling......ok i want to put 40 girls in 10 litre pots in that grow space...i mean all the pots will fit.....ok now im tryna get a better view on wether 3 400's would cover that space and provide at least 3 ounces per plant or will i only get that number with 2 600's???
WayBaked
Active Member
There are a lot of variables that will make a lot more difference than the choice between 2x 600 and 3x 400.
If 3x 400W is significantly easier for you to set-up and use, then by all means do it, just use the reduced heat to bring your lights closer to your plants.
If they're about equal in difficulty of use, then go with 2x 600W because it will result in better coverage.
From the start, though, if your grow floorspace is 8' x 5' = 40 sq. ft. then 1200W will only result in 30 watts per sq. ft. A minimum of 40-50 watts per sq. ft is recommended for Cannabis. It will work, but yield can be expected to be diminished.
If your only choices are 3x 400W or 2x 600W, however, I would have 2x 600W each covering a roughly 5' x 4' area.
thowedoff1994
Active Member
thanks....how many plants in a 5x4 with 10litre pots could fit max with good yeilds?? under 2 600's
WayBaked
Active Member
Fill the canopy.
You can use less plants and train them for a full, even canopy, or you can use more plants...
It also depends on what strain you are growing, if it tends to grow single-cola type, it's better to have a sea of plants; if it's very bushy and branchy; I'd grow a handful of monster bushes.
Grown n Oregon
Active Member
i havnt read beyond this comment but wanna chime in here...
i personally have a 8 x 6 1/2 room and run 3 1000w and avg yield off 6 plants is 2lbs. i ran 5 600w a few years ago and only averaged 1 and a half lbs. i personally thought that spreading out the lights a bit more with the 5 hoods would do better coverage of space...but uhh huhh...the higher discharge of light out of the 1000's straight up smokes the smaller bulbs, hands down. i wouldnt believe it myself if i hadnt done it and seen it with my own 2 eyes. just trying to save u the $$ of wanting to upgrade to 1000's later down the road because the are 100% the way to go with larger spaces like that
i personally have a 8 x 6 1/2 room and run 3 1000w and avg yield off 6 plants is 2lbs. i ran 5 600w a few years ago and only averaged 1 and a half lbs. i personally thought that spreading out the lights a bit more with the 5 hoods would do better coverage of space...but uhh huhh...the higher discharge of light out of the 1000's straight up smokes the smaller bulbs, hands down. i wouldnt believe it myself if i hadnt done it and seen it with my own 2 eyes. just trying to save u the $$ of wanting to upgrade to 1000's later down the road because the are 100% the way to go with larger spaces like that
thowedoff1994
Active Member
sounds good but i know 4 sure i wont be running 3000 watts for 6 plants (HUGE LIGHT BILL!!!)...man ive did those numbers with 900 watts of cfl 15 to 18 plants in a smaller closet ...thats why im about to upgrade and waybaked help me choose..im gonna go with 2 600's and see what it does ....i just know everybody keeps supporttin hps so im guessing ill yield a hellava lot more than the cfls did regardless....thats all im hoping!!i havnt read beyond this comment but wanna chime in here...
i personally have a 8 x 6 1/2 room and run 3 1000w and avg yield off 6 plants is 2lbs. i ran 5 600w a few years ago and only averaged 1 and a half lbs. i personally thought that spreading out the lights a bit more with the 5 hoods would do better coverage of space...but uhh huhh...the higher discharge of light out of the 1000's straight up smokes the smaller bulbs, hands down. i wouldnt believe it myself if i hadnt done it and seen it with my own 2 eyes. just trying to save u the $$ of wanting to upgrade to 1000's later down the road because the are 100% the way to go with larger spaces like that
thowedoff1994
Active Member
3000 watts for 6 plants .....really??????? i mean really???? seriously really????
Grown n Oregon
Active Member
ya really. they are not small plants by any means and they are all not on the same cycle. now that i read my above posting it sounds and looks kind of weird to me too..oops. i cycle 2-4 plants in to flower every 2-3 weeks and harvest 2-3 at the same time...so for a couple weeks there might be 8-10 ladies in there untill i get the finished ones down. one week out of the month i shut one of the hoods off when i have new shorter 5 footers in there...when they hit their strech (bout a week-10 days) i fire the 3rd hood back up because once the ladies stretch and fan out, the extra light is much needed. wash rince and repeat
Grown n Oregon
Active Member
as far as why i do it like that is because im legal with mu ommp card and i try to stay with in my rights and rules. i would love to do 15-20 ladies at a time but i dont like taking those risks anymore..too much to loose these days
thowedoff1994
Active Member
understood......how does it effect your utility bill??