KushKing604
Well-Known Member
how much bud could i get with 9 plants sog 250 watt hps ill be using fox farm ocean Forrest soil and fox farm big bloom and tiger bloom nutes what will be my yield be
9 plants 250 watts SOG????
- Thread starter KushKing604
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azmotodude
New Member
your ganna need more lights for 9 plants...
KushKing604
Well-Known Member
even if i flower them at 8 inches
KushKing604
Well-Known Member
i thought the rule of thumb for sog is 1 plant per square foot and a 250 watt hps puts light out at 3 x 3 square feet
stoverdro
Well-Known Member
no man your gonna want a bigger light for 9 plants.what you do is you take the lumens it puts out and divide it by the plants you have in there and then you figure thats what each plant is gonna get. you should try to have at least a 400w some people will even suggest a 600w. what oyu should do is get another 250 seeing how oyu already have one.
fitzyno1
Well-Known Member
With your 250 watt you can have 20 plants under that.
50 watt per square foot and 4 plant within that square foot.
Your yield per plant will be around 1/2 = around 10oz
dannyking
Well-Known Member
Watts have nothing to do with light or growth. Watts measure how much power a light fixture uses to produce light. You can tell how efficient a light bulb is by looking at watts. A 23 watt CFL produces as much light as a 100 watt incandescent...even though the incandescent has more watts, it's useless. See what I mean?
What you care about is light...more specifically, light energy. That's what plants use during photosynthesis/growth. Light is measured in lumens. In my experience and reading, lumen amounts per sq. ft./sq. m. look like this
2000 lumens sq. ft./21500 lumens sq. m. = Absolute minimum for growth. You won't get much from this, especially after the plant has grown a bit. Not really enough to flower well.
3000 lumens sq. ft./32250 lumens sq. m. = Pretty Good growth. Enough light for the entire light cycle, although your yields may be lower.
4000 lumens sq. ft./43000 lumens sq. m. = Very good growth. Once you pass around 3500, growth rate and ability goes up fast.
Over 5000 lumens sq. ft./53750 lumens sq. m. = Optimal growth. Dense growth in all stages.
Keep in mind that using reflectors, using mylar or having flat white walls, and keeping your lights close to your plants keep you from wasting lumens. It's not just about having light, it's about getting the light to your plants. IMO, people ofter overbuy lights. This creates more light, but the light isn't always hitting the plants. And that creates more heat and ventilation issues, which causes stress problems.
That's why it's still impossible to tell anything about growth or yield based on just lumens. A guy that has an HPS that is too far away from plants that have no walls near them and no ventilation may get poorer results than a grower with CFLs that uses reflectors and has a couple of lights under the canopy in a well-ventilated spot.
HPS lights are often said to generate more heat than CFLs. That's not really true...it's just that they are more efficient at producing light, and there's a smaller surface area on the bulb itself for the resulting heat to dissipate. That means more ventilation. But the higher amount of lumens per watt means you use less power and get greater light penetration through your canopy. Still, I'm a believer that well used CFL's can give you great grows with less ventilation and heat issues. If you're in a small to very small area (less than 4 sq. ft./.25 sq. m.), I'd consider the advantages of CFLs in that way.
But HPS is more efficient. A typical 250 watt HPS bulb/unit will produce about 27,000 lumens. I've seen people use a 250w in a 3' x 3' room and get good results. That's 9 sq. ft. which = 3000 lumens a sq. ft. (Really, a 250w HPS is better in a smaller area.) to give you an idea of the difference in efficiency of CFL vs. HPS, think of this.
23w CFL = 1600 lumens = 69.6 lumens/watt
30w CFL = 2000 lumens = 66.7 lumens/watt
40w CFL = 2600 lumens = 66.3 lumens/watt
compared to
150w HPS = 14000 lumens = 93.3 lumens/watt
250w HPS = 28000 lumens = 112 lumens/watt
400w HPS = 50000 lumens = 125 lumens/watt
600w HPS = 90000 lumens = 150 lumens/watt
So you can see that HPS is more efficient than CFL...and as you get into bigger HPS bulbs, it becomes a lot more efficient. There's also fewer hassles with multiple cords and saved money on your energy bill. If you've got a big area and/or you can deal with the heat and ventilation, HPS is the way to go in flowering. Still, I'm a believer in small HPS lights and combo HPS/CFL grows...if you've got a 2' x 2' room, you can use a 150w HPS and 4 23w CFLs from Wal-Mart and get a terrific grow with very few heat issues.
What you care about is light...more specifically, light energy. That's what plants use during photosynthesis/growth. Light is measured in lumens. In my experience and reading, lumen amounts per sq. ft./sq. m. look like this
2000 lumens sq. ft./21500 lumens sq. m. = Absolute minimum for growth. You won't get much from this, especially after the plant has grown a bit. Not really enough to flower well.
3000 lumens sq. ft./32250 lumens sq. m. = Pretty Good growth. Enough light for the entire light cycle, although your yields may be lower.
4000 lumens sq. ft./43000 lumens sq. m. = Very good growth. Once you pass around 3500, growth rate and ability goes up fast.
Over 5000 lumens sq. ft./53750 lumens sq. m. = Optimal growth. Dense growth in all stages.
Keep in mind that using reflectors, using mylar or having flat white walls, and keeping your lights close to your plants keep you from wasting lumens. It's not just about having light, it's about getting the light to your plants. IMO, people ofter overbuy lights. This creates more light, but the light isn't always hitting the plants. And that creates more heat and ventilation issues, which causes stress problems.
That's why it's still impossible to tell anything about growth or yield based on just lumens. A guy that has an HPS that is too far away from plants that have no walls near them and no ventilation may get poorer results than a grower with CFLs that uses reflectors and has a couple of lights under the canopy in a well-ventilated spot.
HPS lights are often said to generate more heat than CFLs. That's not really true...it's just that they are more efficient at producing light, and there's a smaller surface area on the bulb itself for the resulting heat to dissipate. That means more ventilation. But the higher amount of lumens per watt means you use less power and get greater light penetration through your canopy. Still, I'm a believer that well used CFL's can give you great grows with less ventilation and heat issues. If you're in a small to very small area (less than 4 sq. ft./.25 sq. m.), I'd consider the advantages of CFLs in that way.
But HPS is more efficient. A typical 250 watt HPS bulb/unit will produce about 27,000 lumens. I've seen people use a 250w in a 3' x 3' room and get good results. That's 9 sq. ft. which = 3000 lumens a sq. ft. (Really, a 250w HPS is better in a smaller area.) to give you an idea of the difference in efficiency of CFL vs. HPS, think of this.
23w CFL = 1600 lumens = 69.6 lumens/watt
30w CFL = 2000 lumens = 66.7 lumens/watt
40w CFL = 2600 lumens = 66.3 lumens/watt
compared to
150w HPS = 14000 lumens = 93.3 lumens/watt
250w HPS = 28000 lumens = 112 lumens/watt
400w HPS = 50000 lumens = 125 lumens/watt
600w HPS = 90000 lumens = 150 lumens/watt
So you can see that HPS is more efficient than CFL...and as you get into bigger HPS bulbs, it becomes a lot more efficient. There's also fewer hassles with multiple cords and saved money on your energy bill. If you've got a big area and/or you can deal with the heat and ventilation, HPS is the way to go in flowering. Still, I'm a believer in small HPS lights and combo HPS/CFL grows...if you've got a 2' x 2' room, you can use a 150w HPS and 4 23w CFLs from Wal-Mart and get a terrific grow with very few heat issues.
Lizard.King
Well-Known Member
I got 8 under a 250 and the plants are about 2 feet each and a couple runts in the mix they're all doing pretty good to
OregonMeds
Well-Known Member
9 plants SOG under a 250w hps in a 2.5x2.5 is doing great, don't let anyone tell you it's too many. It's possible to get over 6oz, but 4 is more likely if everything is pretty well set up and maintained right.
I'd suggest instead that you switch to growing perpetual, one plant mature and harvested per week since you can then grow them a bit thicker and get more weight off the same light because the others won't need nearly the same amounts of room.
More bud total and more often.
I'd suggest instead that you switch to growing perpetual, one plant mature and harvested per week since you can then grow them a bit thicker and get more weight off the same light because the others won't need nearly the same amounts of room.
More bud total and more often.
oh really???
Well-Known Member
ok so i have a 250 watt hps as well and doing a vertical SOG.
. . .if you do a vertical sog you utilize the light better. i hung my light downward and put a cool tube around it DIY with a pyrex baking tubeand dryer ducting. at the bottom on the flooris a small desk fan directed up at the light shooting the hot air up towards my blower which sucks it out. . .the vertical light rather than horizontal give you a 360 degree utilization. so all the plants which are 10 as of now surround the light like a campfire. . . .because of the pyrex tube i put the plants within 1-5 inches of the light. i haven't had a burn yet and these 10inch tall clones grow so fast i have to lst them in a loop. the plus side of vert ensures that the plant is illuminated top to bottom. every few days i turn the plants to expose the backside. this is great for small grow-ops.
. . . .riu should have a 250 watt club like icmag.
. . . .as dannyking states you could have a 1000 watt 6 feet from your plant or a 150 watt 2 inches from your plants and it would serve the same purpose. the only issue is heat. plants register lumens as radiation energy for living, the closer the light the more light radiation(energy) it uses. . . .
. . . .and i'm done. . .good day gents.
. . .if you do a vertical sog you utilize the light better. i hung my light downward and put a cool tube around it DIY with a pyrex baking tubeand dryer ducting. at the bottom on the flooris a small desk fan directed up at the light shooting the hot air up towards my blower which sucks it out. . .the vertical light rather than horizontal give you a 360 degree utilization. so all the plants which are 10 as of now surround the light like a campfire. . . .because of the pyrex tube i put the plants within 1-5 inches of the light. i haven't had a burn yet and these 10inch tall clones grow so fast i have to lst them in a loop. the plus side of vert ensures that the plant is illuminated top to bottom. every few days i turn the plants to expose the backside. this is great for small grow-ops.
. . . .riu should have a 250 watt club like icmag.
. . . .as dannyking states you could have a 1000 watt 6 feet from your plant or a 150 watt 2 inches from your plants and it would serve the same purpose. the only issue is heat. plants register lumens as radiation energy for living, the closer the light the more light radiation(energy) it uses. . . .
. . . .and i'm done. . .good day gents.
riceweed147
Well-Known Member
GREAT GREAT INFO DANNY KING
i don't exactly get the rep thing
but if i knew how to rep i would rep you
just helping you so you don't make a mistake on your grow
won't make much of a difference either way but i hope it still helps
i don't exactly get the rep thing
but if i knew how to rep i would rep you
2' x 2.5' = 5 square feet not 2.5' x 2.5'
just helping you so you don't make a mistake on your grow
won't make much of a difference either way but i hope it still helps
KushKing604
Well-Known Member
lizard king lets see some pics plz
KushKing604
Well-Known Member
so theres so many different views here how many plants would you guys do with the 250 sog
fitzyno1
Well-Known Member
Thank you, well noticed, i was think about making a 5 foot square.
Jtoth3ustin
Well-Known Member
fuck that. i just copped 2 150W HPS from the hydro shop. and i got about 8 clones under one in the veg room...... and 3 flowering under the other. ive seen some guy grow 10 plants of some dank shit under just a 70W HPS, and a couple CFL's.... if u pay attention to your ladies, keep that light as close as possible, u can get a half ounce per bitch... thats what i got going. one plant each week with a half to a full ounce of some piff....... with a 250 u could easily get 9 under that bitch. shiiit. i could do 10.
keep it funky man....pE@ce
keep it funky man....pE@ce
stoverdro
Well-Known Member
i mean of course he can use the 250 but if he were to get another 250 and have less plants he could get more off of the plants if he let them grow all the way out and it would probablly come out to more bud......so yes he can do how ever many plants under 1 250 or less under 2...or even the same amount of plants but under 2 250.....i mean it would jsut seem to me to make more sense to add the light if he could(money based) rather than possibly not getting as much out of the grow space as possible ya know......
boricuaboi
Well-Known Member
Your fine I have 6 plants under 6x26 watt cfls and a 150watt hps and I am gonna flower them all in my 1.5x2x4 ft flower room I have 9 all together but the pots are too big so i put the other 3 in my other room