What's the most reliable way to attain >.75 grams per watt with one 1000 watt HPS?

[Masterphonic]

I'm wondering what methods are likely to produce at least .75 grams per watt with one 1000 watt HPS or whether or not this is even regularly attainable. I haven't grown indoors in five years and I'm in the process of putting together a new room. My last grow was under a 400 watt lamp in a closet with poor ventilation and I was quite unimpressed with my 3oz yield so this time I've decided to take it slow and do it right.

I've got an 10x8 room with two windows and a window A/C unit. I'm running a 1000watt HPS in a cool tube exhausted into the attic. One of the windows has been converted into a stealthy sort of air vent by hanging blinds, leaving the window slightly cracked and boarding over the window from the inside and installing a soffit vent cover and some lightproofing. I'm using a big 600cfm blower fan to exhaust the room air into the attic which creates a good amount of pressure in the room and doesn't allow smells to escape from the window. It's fairly noisy, but that's not really an issue for my location. Not to mention when the A/C is on they couldn't be told apart. I'm able to keep the temperature as low as 72F after 12 hours of light.

So, I've got my room 80% finished, now I want to figure out how to get the most from it.

Should I go SCROG, SOG, Bunch of small plants, a small amount of big plants, hydro or soil, organic or chemical, 4'x4' grow area or maybe 5'x5', rectangular shaped bed or perfect square

lol, you get the idea. Any input from experienced growers is appreciated. I've got about another $800 or so left from my original budget to throw at this and I hoping you guys could steer me in the right direction. I just want to get the most out of my setup.


Thanks!

 

[vh13]

Here's the single most impressive setup I've seen so far:

Heath's Flooded Tube Vertical

He's only using a 600w in this setup, but he said you could easily substitute a 1000w light.

Notice, surrounding the bulb with plants (and thus eliminating the need for a reflector) achieves the most efficient distribution of light.

 

[trichlone fiend]

imo, co2 will make your lights produce the most product possible if all other factors are optimal...only give co2 while the lights are on @ 1500ppm. I personally like to grow hydro in flood beds, ebb'n flow. Why? When the bed floods it pushes all of the oxygen/co2 out of the root zone, when the bed drains the new oxygen/co2 is sucked back into the growing medium....I like that idea.

Co2 enhanced rooms will boost the fertilizer intake of your girls...so, I like to fertilize with chemicals (general hydroponics "Lucas Formula") keeping a close eye on my ec/tds/ppm and my pH allows me to see how much fertilizer my girls are eating.

...I just pulled 1-1/4 pound per 600w HPS

 

[desertrat]

1. the easiest way to increase yield per watt is to limit the size of your grow area in such a way as to achieve 7,000 - 10,000 lumens per square inch. you've got about 145,000 lumens to work with so that means a flowering area of 15 to 20 square feet. yes, i know this sounds small for a 1000 watt light but the grow guidelines use 3,000 lumens per square foot and that will not even get you .5 grams per watt. 7,000 is probably a better choice unless you supplement with co2 (which is not the cheapest way to boost yield but with your setup it would be relatively easy to add - about 800 bucks for a generator and monitor/controller). then you can maximize the value of the light penetration of your bulb by picking taller, thinner strains. or you can go with sog or scrog.

2. a good hydro grow will yield more than a good soil grow.

3. genetics matter.

 

[razoredge]

Do this math.. I ran 6 432 watt t5 and got 7.75 pounds out of less then 2600 watts.. best quality I have seen from the t5 yet. The 6 lights where spread out over 4 4x8 flood tables loaded with 3 gallon pots. It has never been hard for me to get 4 grams pls per watt with t5ho. Let the arguing begin haha

 

[Masterphonic]

Do this math.. I ran 6 432 watt t5 and got 7.75 pounds out of less then 2600 watts.. best quality I have seen from the t5 yet. The 6 lights where spread out over 4 4x8 flood tables loaded with 3 gallon pots. It has never been hard for me to get 4 grams pls per watt with t5ho. Let the arguing begin haha

Cool, I'm throwing my HID light away!

Here's the single most impressive setup I've seen so far:

Heath's Flooded Tube Vertical

That vertical hydro grow of heath's is very impressive, I'm very tempted to go that route. His yield was unbelievable.

 

[desertrat]

Do this math.. I ran 6 432 watt t5 and got 7.75 pounds out of less then 2600 watts.. best quality I have seen from the t5 yet. The 6 lights where spread out over 4 4x8 flood tables loaded with 3 gallon pots. It has never been hard for me to get 4 grams pls per watt with t5ho. Let the arguing begin haha

guess i'd have to say you're a great grower who could do even better with more efficient lights. you could get 380,000 lumens from four six hundred watt lights, 2400 total watts, compared to your 240,000 lumens and 2600 watts. it really wouldn't be a contest.

 

[That 5hit]