Recent Harvest/New Grow: DEFINITELY WORTH AT LEAST LOOKING AT MY THREAD PLEASE :)

[glockdoc]

lets break it down this way thou 600w in a 4x4 or 16 sq ft will give u in the ball park of 37.5 watts per sq ft. a 600 pushing 85,000 lumens would give you 5,312 lumens per sq ft.
now if u did a 400 in a 3x3 that would give u 44w per sq ft and 6100 lumens per sq ft
a 250 in a 2x2 will give u 62.5w per sq ft and 7000 lumens per sq ft.
these numbers do increase the further away the light is from the canopy. if i recall right the general rule of thumb is 50w per sq ft?!? i think the rule of thumb for lumens is from 5-7000. the sun puts out 10,000 lumens per sq ft so i would imagine with a good set up and a good strain, the closer to these numbers the better chances you will have of reaching your goal.

 

[CourageToGrow]

lets break it down this way thou 600w in a 4x4 or 16 sq ft will give u in the ball park of 37.5 watts per sq ft. a 600 pushing 85,000 lumens would give you 5,312 lumens per sq ft.
now if u did a 400 in a 3x3 that would give u 44w per sq ft and 6100 lumens per sq ft
a 250 in a 2x2 will give u 62.5w per sq ft and 7000 lumens per sq ft.
these numbers do increase the further away the light is from the canopy. if i recall right the general rule of thumb is 50w per sq ft?!? i think the rule of thumb for lumens is from 5-7000. the sun puts out 10,000 lumens per sq ft so i would imagine with a good set up and a good strain, the closer to these numbers the better chances you will have of reaching your goal.

well put glock.

 

[Dubdeuce]

Buds look nice!

 

[glockdoc]

well put glock.

thx brotha

 

[East Coast Pro]

Thanks again GlockDoc!!!

 

[glockdoc]

Thanks again GlockDoc!!!

yessirr. keep us posted up wit your choice.

 

[PJ Diaz]

lets break it down this way thou 600w in a 4x4 or 16 sq ft will give u in the ball park of 37.5 watts per sq ft. a 600 pushing 85,000 lumens would give you 5,312 lumens per sq ft.
now if u did a 400 in a 3x3 that would give u 44w per sq ft and 6100 lumens per sq ft
a 250 in a 2x2 will give u 62.5w per sq ft and 7000 lumens per sq ft.
these numbers do increase the further away the light is from the canopy. if i recall right the general rule of thumb is 50w per sq ft?!? i think the rule of thumb for lumens is from 5-7000. the sun puts out 10,000 lumens per sq ft so i would imagine with a good set up and a good strain, the closer to these numbers the better chances you will have of reaching your goal.

IMO a 400 doesn't really cover a 3x3 space, nor does a 600 cover a 4x4. I think it's nice to have a larger tent than you plan to cover with plants to give them some breathing room however. I think a 400 will cover 2.5'x2.5' (6.25 sq feet) well, and a 600 will cover 3.25'x3.25' (10.5 sq feet). That said, you can grow almost 70% more with a 600 vs a 400 with only 50% more power.

 

[PJ Diaz]

lets break it down this way thou 600w in a 4x4 or 16 sq ft will give u in the ball park of 37.5 watts per sq ft. a 600 pushing 85,000 lumens would give you 5,312 lumens per sq ft.
now if u did a 400 in a 3x3 that would give u 44w per sq ft and 6100 lumens per sq ft
a 250 in a 2x2 will give u 62.5w per sq ft and 7000 lumens per sq ft.
these numbers do increase the further away the light is from the canopy. if i recall right the general rule of thumb is 50w per sq ft?!? i think the rule of thumb for lumens is from 5-7000. the sun puts out 10,000 lumens per sq ft so i would imagine with a good set up and a good strain, the closer to these numbers the better chances you will have of reaching your goal.

Your numbers seem off here. For the sake of argument, let's take the sq footage spaces you've selected for each different light:

250w high output HPS bulb = 35,000 lumens -- in a 2x2 tent (4 sq feet) = 8500 lumens per sq foot
400w high output HPS bulb = 55,000 lumens -- in a 3x3 tent (9 sq feet) = 6100 lumens per sq foot
600w high output HPS bulb = 95,000 lumens -- in a 4x4 tent (16 sq feet) = 5900 lumens per sq foot
1000w high output HPS bulb = 150,000 lumens -- in a 5x5 tent (25 sq feet) = 6000 lumens per sq foot

Now, let's do the math backwards and figure out what the actual footprint we can get out of each sized light to compete with the 250w in a 2x2 tent (8500 lumens/sq ft)

250w high output HPS bulb = 35,000 lumens -- in a 2x2 tent (4 sq feet) = 8500 lumens per sq foot = 62w/sq ft
400w high output HPS bulb = 55,000 lumens -- in a 2.5x2.6 tent (6.5 sq feet) = 8500 lumens per sq foot = 61.5w/sq ft
600w high output HPS bulb = 95,000 lumens -- in a 3.2x3.4 tent (11 sq feet) = 8500 lumens per sq foot = 54.5w/sq ft
1000w high output HPS bulb = 150,000 lumens -- in a 4x4.4 tent (17.5 sq feet) = 8500 lumens per sq foot = 57.14w/sq ft

 

[glockdoc]

we do have to add height of lights into the equation.

 

[PJ Diaz]

we do have to add height of lights into the equation.

Yes. That's what affects your footprint. When you raise the lights, it makes a bigger footprint, which is why the 600 will cover 3x's the space as a 250 in the same hood.

Also to be fair, we should consider penetration and the fact that you can have taller plants with a bigger light, because the bigger light will penetrate to lower branches better than a 250 will.

View attachment 2087120

 

[glockdoc]

well me and u both are using different numbers both lumens and sq ft. i seen a 600 that only puts out 85,000 lumens so it was used as an example.i said 85000 but ur sayin 95000. the 600 u have or seen puts out 10,000 more. im willing to bet other people come in here with there own numbers and there own claims that a 400 can cover a 3x3 and what not, and that there light puts out more or less then the numbers we are stating. i know its only your opinion, all i was trying to do is give homie a better understanding on how to pick a set up basically

 

[PJ Diaz]

250w high output HPS bulb = 35,000 lumens -- in a 2x2 tent (4 sq feet) = 8500 lumens per sq foot = 62w/sq ft
400w high output HPS bulb = 55,000 lumens -- in a 2.5x2.6 tent (6.5 sq feet) = 8500 lumens per sq foot = 61.5w/sq ft
600w high output HPS bulb = 95,000 lumens -- in a 3.2x3.4 tent (11 sq feet) = 8500 lumens per sq foot = 54.5w/sq ft
1000w high output HPS bulb = 150,000 lumens -- in a 4x4.4 tent (17.5 sq feet) = 8500 lumens per sq foot = 57.14w/sq ft

well me and u both are using different numbers both lumens and sq ft. i seen a 600 that only puts out 85,000 lumens so it was used as an example.i said 85000 but ur sayin 95000. the 600 u have or seen puts out 10,000 more. im willing to bet other people come in here with there own numbers and there own claims that a 400 can cover a 3x3 and what not, and that there light puts out more or less then the numbers we are stating. i know its only your opinion, all i was trying to do is give homie a better understanding on how to pick a set up basically

That's cool, but for the record it's not my opinion -- it's simple math, and numbers don't lie.

I used the lumen output for high output aggromax bulbs:


AgroMax 1,000 watt High Pressure Sodium Bulb

TOP OF THE LINE 150,000 Lumens!!! Spectrally Enhanced




AgroMax 250 watt High Pressure Sodium Bulb

TOP OF THE LINE35,000 Lumens!!! Spectrally Enhanced




AgroMax 400 watt High Pressure Sodium Bulb

TOP OF THE LINE 55,000 Lumens!!! Spectrally Enhanced




AgroMax 600 watt High Pressure Sodium Bulb

TOP OF THE LINE95,000 Lumens!!!Spectrally Enhanced

 

[glockdoc]

so what if i used a diff bulb that put out more or less lumens?

http://www.specialty-lights.com/bulb-upgrade.html

and now what if the persons tent isnt to your dimensions.

 

[PJ Diaz]

so what if i used a diff bulb that put out more or less lumens?

http://www.specialty-lights.com/bulb-upgrade.html

and now what if the persons tent isnt to your dimensions.

Well then obviously your results would be different with a different output bulb. However, keep in mind that the example I used were bulbs all from the same manufacturer, and as far as I know are all the highest lumen output possible. I specifically compared those bulbs for consistency, and also because those are the output of the bulbs smart growers would choose. People's tent dimensions don't make a difference in my calculations. I'm simply telling you what the coverage area for the bigger lights is compared to a 250 at the same lumen output /sq foot. I don't get why it's so tricky to understand?

 

[PJ Diaz]

Oh, apparently the Ushio 600w hps puts out a little more:

Watts (W)	USHIO Order Code	USHIO Lamp Description	Lumens Initial (lm)	Color Temp (K)	Operating Current	Max. Starting Current	Ave. Life (h)	MOL (mm)	Burn Position
600	5001670	AHS-600/Opti-Red	97,000	2100	6.2A	8.1A	19,000	265	Universal
	Lamp Voltage	Ignition Voltage	Warm up Time	Reignition Time	Bulb Shape	Dia. (mm)	Ballast
95-125V	4KV-5KV	5 minutes	2 minutes	T15	46	HPS S106

 

[East Coast Pro]

Thank both you guys!! Hahaha you don't have to argue, everyone has there on opinion on each subject on this site..real simple question that I want both you guys to answer: 3X3 400w HPS tent could it yield almost as much as a 4X4 600w HPS tent? I guess what I'm asking is can I yield enough with the 3X3 400w HPS to be happy with my choice of buying the cheaper 400w light and saving that extra $ on the light bill, or would the 4X4 600w HPS really yield that much more?

 

[East Coast Pro]

PJ I was looking at those bulbs on htgsupply.com too. I'm not too far from Charlotte where they have a location, I'm thinking about buying a piece along at the time until I got my tent setup!!!

 

[PJ Diaz]

Thank both you guys!! Hahaha you don't have to argue, everyone has there on opinion on each subject on this site..real simple question that I want both you guys to answer: 3X3 400w HPS tent could it yield almost as much as a 4X4 600w HPS tent? I guess what I'm asking is can I yield enough with the 3X3 400w HPS to be happy with my choice of buying the cheaper 400w light and saving that extra $ on the light bill, or would the 4X4 600w HPS really yield that much more?

In a 3x3 under a 400w you will pull in between 4 and 8 oz most likely. In a 4x4 with a 600 you will pull 8 to 12. With good skill you can pull in a pound in 4x4 with a 600. The 600 will get about 6 degrees hotter in a 4x4 space than a 400 will in the same sized space. The fact is that a 600 is the most efficient hps lamp available.

 

[PJ Diaz]

PJ I was looking at those bulbs on htgsupply.com too. I'm not too far from Charlotte where they have a location, I'm thinking about buying a piece along at the time until I got my tent setup!!!

Check craigslist for gear. You can get stuff for half price easy. I sold a 400w hps kit on CL just a few weeks ago for $75.

 

[East Coast Pro]

I'll probably just go 600w and be done, not have to worry about upgrading in the future..especially if it'll only cost me $10-$15 more a month than a 400w. Maybe what, 600w light, ballast, exhaust fan, carbon filter, and all for $40 a month? I'll only be running 12 hours a day, I'll be doing 12-12 from seed...