AutoFlower PPM Ranges

W

whitnasty1

Member
Been trying to locate a PPM chart for Autoflowering strains and haven't had much luck. I will begin germination tomorrow, looks like I'm going to have enough room for 8 autos in my 4' x 5' area with a 600w ipower, they will be in 5 gallon buckets. I would like to fit 10 but i think it's going to be close. In particular am looking for the PPM for seedlings. I have been resting my home tap and it's in the 122-200 range it jumps around. Will this be sufficient or do I need to buy a bunch of distilled water at first? If you guys have a complete chart I would really appreciate it. thanks again everyone!
 
Taviddude

Taviddude

Well-Known Member
Every strain is different and the nutrient requirements can vary widely.
It will also vary with the brand of nutrients you use, or what kid of water you're using.

I grow large autoflowers, and I can NEVER push past 600 ppm in full bloom using General Hydroponics nutrients.
I give them nothing for a few days and then start them on 150ppm for about a week.
I usually push that to 400 for a week after that.
By day 30 I'm usually at 500 and won't push too much further past that until bloom.

Your schedule will be totally different.



To be safe without burning your plants.
Here's a pretty safe schedule. Although in hydro you should know how to read your plants and know what they need from movements in PPM, and PH.

1- 100
2- 200
3- 400
4- 450
5- 500
6- 525
7- 525
8- 525
9- 550
10-550
11-400
12-0

Also, if those plants will be sharing a reservoir you will want to run a bit lighter on nutrients in order not to burn weaker plants.
You just kind of have to play the middle ground with that many auto's.
If you're growing them all in separate bubble buckets..... Have Fun checking/adjusting water level, PPM, PH and res changes.

Peace.
Tav
 
W

whitnasty1

Member
Thanks for letting of the information man! I didn't know that you had to go that light on them. I am growing in soil by the way. What happens when you end up going past 500ppm? That seems like extremely small amounts of nutes.
 
tekdc911

tekdc911

Well-Known Member
a good starting point for nutes is 1/4 strength for soil grows
even strains i know can handle heavier nutes i still start at 1/4
never know when you can pop a nute sensitive pheno
 
Taviddude

Taviddude

Well-Known Member
whitnasty1 said:
Thanks for letting of the information man! I didn't know that you had to go that light on them. I am growing in soil by the way. What happens when you end up going past 500ppm? That seems like extremely small amounts of nutes.
Click to expand...
If you go too high then you burn your plant, growth slows or stalls, and the plant can die.
 
W

whitnasty1

Member
Alright sounds good, so around 100ppm max will be sufficient for seedlings? What nutrients do you guys use on your autos? Just wondering. I am thinking of going with Fox Farm's line, along with Cha Ching Open Seasame and Beastie Bloom. Might pick up general organics Go Box for their CaMg+ and their Bio Root. Seem to be beneficial products. Thoughts?
 
renkar

renkar

Well-Known Member
ive read a lot on auto and nutes and the only big difference btw auto and reg is they are more sensitive to nute. Im about to buy myself my nutes and I find GO to be quite a fine produvt saw lot of grow journal using them with great result
 
M

Marcus516

Well-Known Member
So that chart is perfect for fox far nutes also I'm using soil ? And I need a fox farm ppm chart for auto mind helping ?
 
A

As Above So Below

Member
Taviddude said:
Every strain is different and the nutrient requirements can vary widely.
It will also vary with the brand of nutrients you use, or what kid of water you're using.

I grow large autoflowers, and I can NEVER push past 600 ppm in full bloom using General Hydroponics nutrients.
I give them nothing for a few days and then start them on 150ppm for about a week.
I usually push that to 400 for a week after that.
By day 30 I'm usually at 500 and won't push too much further past that until bloom.

Your schedule will be totally different.



To be safe without burning your plants.
Here's a pretty safe schedule. Although in hydro you should know how to read your plants and know what they need from movements in PPM, and PH.

1- 100
2- 200
3- 400
4- 450
5- 500
6- 525
7- 525
8- 525
9- 550
10-550
11-400
12-0

Also, if those plants will be sharing a reservoir you will want to run a bit lighter on nutrients in order not to burn weaker plants.
You just kind of have to play the middle ground with that many auto's.
If you're growing them all in separate bubble buckets..... Have Fun checking/adjusting water level, PPM, PH and res changes.

Peace.
Tav
Click to expand...
Taviddude said:
Every strain is different and the nutrient requirements can vary widely.
It will also vary with the brand of nutrients you use, or what kid of water you're using.

I grow large autoflowers, and I can NEVER push past 600 ppm in full bloom using General Hydroponics nutrients.
I give them nothing for a few days and then start them on 150ppm for about a week.
I usually push that to 400 for a week after that.
By day 30 I'm usually at 500 and won't push too much further past that until bloom.

Your schedule will be totally different.



To be safe without burning your plants.
Here's a pretty safe schedule. Although in hydro you should know how to read your plants and know what they need from movements in PPM, and PH.

1- 100
2- 200
3- 400
4- 450
5- 500
6- 525
7- 525
8- 525
9- 550
10-550
11-400
12-0

Also, if those plants will be sharing a reservoir you will want to run a bit lighter on nutrients in order not to burn weaker plants.
You just kind of have to play the middle ground with that many auto's.
If you're growing them all in separate bubble buckets..... Have Fun checking/adjusting water level, PPM, PH and res changes.

Peace.
Tav
Click to expand...
Hi i know this is an old post but was just wondering, are you taking into account the ppm of the water before hand or is this ppm guide only for nutrients...hope you understand my question..
 
tekdc911

tekdc911

Well-Known Member
As Above So Below said:
Hi i know this is an old post but was just wondering, are you taking into account the ppm of the water before hand or is this ppm guide only for nutrients...hope you understand my question..
Click to expand...
in a perfect world you would use RO the starting ppm would be minimal
 
Seedlin

Seedlin

Well-Known Member
Just finishing up my 1st auto run. I never measured ppm once. Fed every day from seedling to flush FloraNova Bloom 1 tsp/gal, Cal-Mag Plus 1/2 tsp/gal and well water. My medium is coco/perlite about 70/30, 3 gal Hempy buckets, 1000w hp in a 9 x 9 room. Kept my feed at 5.8 ph + -. As they grew I bumped the Bloom up to 2 tps per. Flushed the Cash Crop for 7 days chopped at 86, the 2 Fast 2 Vast and Freeze Berry are near finish at 90 days. You can see em on my " A bunch of em this time thread." :weed:
 
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