I haven't had a chance to look at it. I have down time around 2pm so I'll have a chance to play around with it then.
Thanks again!

Rough Sunday? Who am I to talk. I gotta drag my ass in tonight at 10:45 PM EST. It's my Friday so I'm off the next two after tonight. Rotating off days suck!
 
I guess I'm now going to have to experiment and find out eh? I just sprouted two Quarter Pounder auto X Gorilla Glue auto crosses. I'm thinking everything identical with the exception of the amount of nutrients. Feed one with my regular 3.5 grams / gallon and the other feed her the 6.5 grams / gallon I give to my photo period plants. And see what happens.
 
What I am trying to wrap my head around is the difference between how much nutrients does a plant need and how much nutrients can a plant endure and not die. I think at a certain point there is a line. That line is the maximum amount of nutrients the plant can uptake. That's what I am trying to find. I think any nutrients over that line are wasted as the plant cannot absorb them.

But I am now wondering with the autos I've grown in the past feeding them approximately 3.5 grams per gallon of water if the 677 PPM falls short of the total amount of nutrients an autoflower plant can uptake at feeding. And if perhaps that has something to do with their diminutive size and yield.

I found last summer that genetics are mandatory when it comes to autos. I used to grow a lot of Sweet Seeds stuff. Most were small. Around 2 oz per plant. Big ones were 3.5. Grew Fast Buds and Dutch Passion for the comparison grows and averaged 4.5 a plant (and that's in one tiny ass tent). Grew a couple other breeder's strains the grow after that (primarily Sweet Seeds), yields plumeted again. Back to Fastbuds this grow. Things look like I'm gonna get that 4.5 plus a plant again. Same light, same tent, same feed schedule.
 
I guess I'm now going to have to experiment and find out eh? I just sprouted two Quarter Pounder auto X Gorilla Glue auto crosses. I'm thinking everything identical with the exception of the amount of nutrients. Feed one with my regular 3.5 grams / gallon and the other feed her the 6.5 grams / gallon I give to my photo period plants. And see what happens.

Try 1g from day 1. Each week (there about), increase 1g. So week 2 is 2g, week 3 is 3 g, week 4 is 4g, and so on. I may "cheat" a day or so, so that by Week 4 I'm at 5g. Somewhere around 5-6g you'll probably see a bit of tip burn. Stop there and maintain that level through harvest. That's for every watering and in a soil-less media like Pro Mix or Coco. The exact same method works with Dyna Gro Foliage Pro only instead of grams, substitute ml.
 
Gosh darnit, I don't want to hijack the thread but I'm like a sponge wanting to suck up information. I've grown a few Dark Devil (Sweet Seeds) and my best yield (64 grams dry) was the last one, grown in hempy, in my flowering tent with 11/13 lighting feeding at 3.5 grams / gallon.

Could I have been feeding this plant 6.5 gram / gallon and seen a tremendous increase in plant size and yield?
 
Gosh darnit, I don't want to hijack the thread but I'm like a sponge wanting to suck up information. I've grown a few Dark Devil (Sweet Seeds) and my best yield was the last one, grown in hempy, in my flowering tent with 11/13 lighting feeding at 3.5 grams / gallon.

Could I have been feeding this plant 6.5 gram / gallon and seen a tremendous increase in plant size and yield?

The Devil isn't known as a yielder and my experience with Sweet Seeds, most of their autos aren't. Their photo seeds don't seem to have that issue.
 
I just finished an autoflower seed breeding project using a Canuk Quarter Pounder (sativa dom, 25% THC) plant that I reversed for pollen. I crossed her pollen with 5 strains total. From Fast Buds, through the @SeedsMan site I grew Stardawg and Gorilla Glue. From Barney's Farm I grew a Tangerine Dream for the project. I also pollinated a Dark Devil from Sweet Seeds. I of course self pollinated the Quarter Pounder. And finally I pollinated a good sized bud on one of the Colombian Gold photo plants I had growing at the time.

So I have some autoflower seeds to play with and experiment to find out what works best.
 
I just finished an autoflower seed breeding project using a Canuk Quarter Pounder (sativa dom, 25% THC) plant that I reversed for pollen. I crossed her pollen with 5 strains total. From Fast Buds, through the @SeedsMan site I grew Stardawg and Gorilla Glue. From Barney's Farm I grew a Tangerine Dream for the project. I also pollinated a Dark Devil from Sweet Seeds. I of course self pollinated the Quarter Pounder. And finally I pollinated a good sized bud on one of the Colombian Gold photo plants I had growing at the time.

So I have some autoflower seeds to play with and experiment to find out what works best.

My goal is to one day breed my own strain and call it "Item 9" (from the beginning of the movie Pineapple Express). I just can't devote the time and space to such a project given I only have 7 sq/ft to deal with and need some kind of product to keep the wheels turning.
 
Rough Sunday? Who am I to talk. I gotta drag my ass in tonight at 10:45 PM EST. It's my Friday so I'm off the next two after tonight. Rotating off days suck!
LOL, it wasn't until my wife woke up. Apparently she had big plans for me!

I guess I'm now going to have to experiment and find out eh? I just sprouted two Quarter Pounder auto X Gorilla Glue auto crosses. I'm thinking everything identical with the exception of the amount of nutrients. Feed one with my regular 3.5 grams / gallon and the other feed her the 6.5 grams / gallon I give to my photo period plants. And see what happens.
Are you planting from tap to final pot? I know it's arguable, but as you can see my autos go straight to final home. On my other current grow, I have four Pineapple Express autos from Fastbuds. Two were transplanted, two were not.
Same tent, different soils. The transplanted ones were in FFOF and stunted sevely in growth and low yielders. The non-transplanted ones were in MG, same stuff in this grow, and grew massive colas. So it could be the soil, but I think I stressed them on transplant which stunted the growth. Autos are really sensitive to stress as you may know.

Gosh darnit, I don't want to hijack the thread but I'm like a sponge wanting to suck up information. I've grown a few Dark Devil (Sweet Seeds) and my best yield (64 grams dry) was the last one, grown in hempy, in my flowering tent with 11/13 lighting feeding at 3.5 grams / gallon.

Could I have been feeding this plant 6.5 gram / gallon and seen a tremendous increase in plant size and yield?
Never fear about hi-jacking. We all learn. My journal is your journal!
 
@farside05
OK, looking at the spreadsheet. First off, kudos on the amazing work, and thanks for sharing the info :Namaste:
On the PPM calc, the UOM is mL for MC. How would this relate to grams then? I entered in my tap ppm of 216, left the MC value at 5, and comes up as 750ppm, based on 5mL if I understand it correctly. Is there a way to easily change the formula in certain data cells to switch to grams? Or am I reading it all wrong?
 
I just can't devote the time and space to such a project given I only have 7 sq/ft to deal with

I built a cheap grow box for autos. One of my favorite things about autos is not having to worry about them being in total darkness when the light goes off. I can fit two autos in this box and it's in my office.
 
I'm conflicted with the transplanting into the final pot vs. planting in the final pot. I germinate exclusively in a hempy solo cup. When the seedling is 3 days old I float the perlite to loosen everything up, and very gently lift out the rooted seedling. And already have the final pot with the ProMix BX already moistened with a hole for the root. I do this all with my fly tying magnifying visor on so I'm very gentle.

I just have such high germination rates with the hempy solo cups.
 
@farside05
OK, looking at the spreadsheet. First off, kudos on the amazing work, and thanks for sharing the info :Namaste:
On the PPM calc, the UOM is mL for MC. How would this relate to grams then? I entered in my tap ppm of 216, left the MC value at 5, and comes up as 750ppm, based on 5mL if I understand it correctly. Is there a way to easily change the formula in certain data cells to switch to grams? Or am I reading it all wrong?

When I built it, the labels were for designed for liquids. For the purpose of Mega, 1g should equal 1ml.
 
I suppose now I'll have to germinate 5 seeds hoping for four to sprout. #1 goes straight into a 3 gallon pot of ProMix BX to sprout and is fed up to 6.5 grams of MC. #2 gets transplanted from a hempy solo cup into a 3 gallon pot of ProMix BX once it sprouts and is fed up to 6.5 grams of MC. #3 goes straight into a 3 gallon pot of ProMix BX to sprout and is fed up to 50% strength nutes through harvest. #4 gets transplanted from a hempy solo cup into a 3 gallon pot of ProMix BX once it sprouts and is fed up to 50% strength nutes through harvest.
 
OK good, thanks. Mine may be different. I'm used to dishing 4 x 1ml scoops to get 10g's ish. I'll let you know tonight what mine comes in at. I'll do three different 1mL level measurements.

Yours should come out different than mine. Probably lower. The NPK numbers on the 2.0 version are higher. The input numbers are based on 5ml, or in this case grams per gallon, on the ppm/EC sheet. Especially with the lumpy dried Mega, larger gram sample sizes will probably yield a more consistent result.
 
I suppose now I'll have to germinate 5 seeds hoping for four to sprout. #1 goes straight into a 3 gallon pot of ProMix BX to sprout and is fed up to 6.5 grams of MC. #2 gets transplanted from a hempy solo cup into a 3 gallon pot of ProMix BX once it sprouts and is fed up to 6.5 grams of MC. #3 goes straight into a 3 gallon pot of ProMix BX to sprout and is fed up to 50% strength nutes through harvest. #4 gets transplanted from a hempy solo cup into a 3 gallon pot of ProMix BX once it sprouts and is fed up to 50% strength nutes through harvest.
:) Sometimes that's the only way we know. That's why I am doing my comparison grow as well. The variables should be that much more consistent with the knowledge just passed onto me and I should be able to have a reliable answer at the end of it all.
Yours should come out different than mine. Probably lower. The NPK numbers on the 2.0 version are higher. The input numbers are based on 5ml, or in this case grams per gallon, on the ppm/EC sheet. Especially with the lumpy dried Mega, larger gram sample sizes will probably yield a more consistent result.
Got it! Again, thanks for the great info :)
 
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