What's the longest time you can keep your res without topping off?

southernguy99 said:

you are exactly right, I agree with all of that, but I don't think and maybe i'm wrong but most home growers probably couldn't careless about this, because there not paying for floor space they just look at how many light and total yield , and honestly for home growers I know they could careless about that lol most HG just want to grow , but when I was in the big commercial stuff we knew right down to the square foot what everything cost and yield whether it was 80 - 90 - 100g for each square foot we knew, but we were paying for floor space. But if anyone wants to check how there doing that is the way.

Click to expand...

It is not about floor space or what you pay for it.
Floor space is one of the parameters if you want to compare grows.
Just like length of a run, and the amount of Watts in HPS or LED above it.
So I am curious about yours.

Hydro4life said:

I've also found some strains foxtail easier in a warmer environment than others. So maybe a bit of both?

Click to expand...

Buds will foxtail in heat and stress environments, but my point was that some strains will foxtail simply because that is part of their growth pattern so you can't use foxtailing as a sure sign of poor growing conditions.

Here it is imperial measurements so we use feet. So for 4sq feet my average is 1.63g/w, with my best being around 2.03g+/w. In 4sq feet I have 550 watts LED and typical grow is 508.2kwh (924kwh*0.55kw). Average is 2lb yield, best so far was 2.5lbs+.

Jefferson1977 said:

Here it is imperial measurements so we use feet. So for 4sq feet my average is 1.63g/w, with my best being around 2.03g+/w. In 4sq feet I have 550 watts LED and typical grow is 508.2kwh (924kwh*0.55kw). Average is 2lb yield, best so far was 2.5lbs+.

Click to expand...

Nice yield!
How did you calculate your kWh?
Because I see 2 numbers: 508.2 and 924.
I guess the 924 is only hours.

Keesje said:

Nice yield!
How did you calculate your kWh?
Because I see 2 numbers: 508.2 and 924.
I guess the 924 is only hours.

Click to expand...

Thanks! I use QB lights @ 3000k, love them, best purchase ever. 924 is the hours * 0.55kw (550watts) = 508.2kwh total. I used basically the same calc as you for the hours, 2 weeks veg and 8 weeks bud. Sometimes I run 9-10 week strains but other times I run 6,7,or 8 weeks strains so it all evens out.

Keesje said:

It is not about floor space or what you pay for it.
Floor space is one of the parameters if you want to compare grows.
Just like length of a run, and the amount of Watts in HPS or LED above it.
So I am curious about yours.

Click to expand...

Yeah I'll post no issues , I would have earlier but had to make another trip to the doctor, fighting pneumonia for like a month now us old guys can't handle this shit,new round of meds.

Lol it is when your boss says he's pays x amount per square and wants to no what were making , but I know what you mean

ok so this was my last grow, the strain is from a guy on here so I will not list it. 2nd grow with this strain but 1st time under my newer lights, 2nd grow with lights, make sense. Lights are NXT-LP 600w HPS

Like I said 12lb last round that breaks down to 84.375 square foot or 3lb 4 sq feet or 2lb sq meter 4 lights one for each 4sq feet so thats 2.2g/w 4sqf, veg. for 14 days I think might have been 12 not sure under 2 lights , ran 3 light for first week flower 4 from 2nd week to on, ran an older 400w single end hps from week 4.5 to start of week 6, finished in 54 days , solid numbers I think I could squeeze a little or out of it if i changed a few thing and did foliar feed of macro and micros but i'm not going to run it anymore. My heavy strains under these lights I think will kill it, I never got nothing running this year yet and having been sick I don't think i'll do one before summer, but If I can get the balls to do so maybe I'll pull out one of my real heavy strains and do a grow journal this fall/late summer.

Jefferson1977 said:

Thanks! I use QB lights @ 3000k, love them, best purchase ever. 924 is the hours * 0.55kw (550watts) = 508.2kwh total. I used basically the same calc as you for the hours, 2 weeks veg and 8 weeks bud. Sometimes I run 9-10 week strains but other times I run 6,7,or 8 weeks strains so it all evens out.

Click to expand...

I have a question: You said 4 square feet. It seems like a lot of light on a 2 x 2 feet.
Also it seems like a lot of yield on 2 x 2 feet.

southernguy99 said:

Like I said 12lb last round that breaks down to 84.375 square foot or 3lb 4 sq feet or 2lb sq meter 4 lights one for each 4sq feet so thats 2.2g/w 4sqf, veg. for 14 days I think might have been 12 not sure under 2 lights , ran 3 light for first week flower 4 from 2nd week to on, ran an older 400w single end hps from week 4.5 to start of week 6, finished in 54 days ,

Click to expand...

I don't really get your numbers.
If your yield is 12 lb's on 84 square feet, then you would have 1lb per 7square feet. (84 divided by 12 = 7)

And also 3 lb's on 2 x 2 feet seems like a bit much.
Don't you mean 4 x 4 feet?

Keesje said:

I have a question: You said 4 square feet. It seems like a lot of light on a 2 x 2 feet.
Also it seems like a lot of yield on 2 x 2 feet.

Click to expand...

lol if I said 4sq feet that is not what I meant :0 . 4x4.

Jefferson1977 said:

lol if I said 4sq feet that is not what I meant :0 . 4x4.

Click to expand...

Still, a great result.

2lb - 2.5+lbs = about 900 - 1150 grams
4 x4 feet is about 1.44 square meters.
That is about 625 to 800 grams per square meter.
Those are really high numbers.
And especially just with 550 Watts of led.

Is this with or without adding extra CO2?

Jefferson1977 said:

Buds will foxtail in heat and stress environments, but my point was that some strains will foxtail simply because that is part of their growth pattern so you can't use foxtailing as a sure sign of poor growing conditions.

Click to expand...

I've now found out that what you feed them, also contributes to foxtails.
My last run was unstressed and climate controlled, it still foxtailed.
I don't mind, as it is easier to trim, and didn't look too bad.

Keesje said:

Still, a great result.

2lb - 2.5+lbs = about 900 - 1150 grams
4 x4 feet is about 1.44 square meters.
That is about 625 to 800 grams per square meter.
Those are really high numbers.
And especially just with 550 Watts of led.

Is this with or without adding extra CO2?

Click to expand...

I only have an xl exhale bag in the room. Probably negligible, though might help a bit.

Jefferson1977 said:

I only have an xl exhale bag in the room. Probably negligible, though might help a bit.

Click to expand...

I am following your grow journal now.
Would love to see also some numbers there. Nutes, schemes and such, I mean.

Keesje said:

I don't really get your numbers.
If your yield is 12 lb's on 84 square feet, then you would have 1lb per 7square feet. (84 divided by 12 = 7)

And also 3 lb's on 2 x 2 feet seems like a bit much.
Don't you mean 4 x 4 feet?

Click to expand...

my mistake thats 84 grams per square foot. and 4 sq is 4x4 ( feet being the measurement )

So you get 12 lbs or 5440 gram...
4 x 600 Watt...
64 square feet or 6 square meters...
14 days veg and 54 days flowering....

So 600 Watt HPS above 4 x 4 feet and then get 3 lbs or 1360 grams under 70 days
Or like 400 Watt above 1 square meter HPS and then get 2 lbs or 900 grams under 70 days.

I find that really, really hard to believe and I guess it would mean an absolute new world record.
So I think somewhere you got some numbers mixed up.

Keesje said:

So you get 12 lbs or 5440 gram...
4 x 600 Watt...
64 square feet or 6 square meters...
14 days veg and 54 days flowering....

So 600 Watt HPS above 4 x 4 feet and then get 3 lbs or 1360 grams under 70 days
Or like 400 Watt above 1 square meter HPS and then get 2 lbs or 900 grams under 70 days.

I find that really, really hard to believe and I guess it would mean an absolute new world record.
So I think somewhere you got some numbers mixed up.

Click to expand...

Not sure whats hard to believe thats 2g/w or a hair less as i used 400w light as well.

one the lights I use are as good as 1000w single end hps any day, they penetrate way better plus with the 4 I have lots of cross coverage, and can manage the heat.
start with good rooted clones period, if there not in good shape everything will take longer ,hydro is faster, depending on the strain they'll stack inches a day and you need top strains, I have other strains finish in the same time others that take a week or so longer, and with other strains I'm lucky if I can 8lb off of.
after that its little things, temp, humidity rez,change mixing own nutes etc etc. its the little thing that makes big differences. If anything goes wrong you cant get 2g/w, its very hard to do in the spring summer, thats why I usually grow in fall/winter

Jefferson1977 said:

Thanks! I use QB lights @ 3000k, love them, best purchase ever. 924 is the hours * 0.55kw (550watts) = 508.2kwh total. I used basically the same calc as you for the hours, 2 weeks veg and 8 weeks bud. Sometimes I run 9-10 week strains but other times I run 6,7,or 8 weeks strains so it all evens out.

Click to expand...

dam dude good work with only 2 weeks of veg? What quantums u got? I love them too. Am on first full cycle with them. Looks dam good so far. Ive got 8 qb132's(4 2700k, 4 3000k)= roughly 575w & a mars ts=150w in flowering room. Only 10 days into flower but cant wait.. Good job with ur info on grow. Thx

Back when I had amazing water, not RO but like 10 to 30 ppm and always a perfect 7 I would always run my Rez for 3 months using Lucas formula. Never had problems. Did it with dwc, aero recirc systems etc. I bet you could do multiple cycles in the right circumstances.