Reliable ppm chart for marijuana??

H

hxvoc

Active Member
I gave up on getting the right mix. Every run I have a deficiency. low, medium, high ppm doesnt matter I consistantly get rust spots on all of my plants. I still get some bud so im just about over it. fuck it I just deal with the rusty ugly looking plants. still seems to smoke ok when its all said and done
 
F

farmerman421

Member
does anyone have info on ppms of calcium and magnesium range they use through out a grow? I understand it is different in veg vs. bloom.
 
ProPheT 216

ProPheT 216

Well-Known Member
hxvoc said:
I gave up on getting the right mix. Every run I have a deficiency. low, medium, high ppm doesnt matter I consistantly get rust spots on all of my plants. I still get some bud so im just about over it. fuck it I just deal with the rusty ugly looking plants. still seems to smoke ok when its all said and done
Click to expand...
Just to state the obvious here, because no one else has yet. If your feeding your plants and they are getting everything they need n u see early leaf drop and rust spots 9/10 times your over feeding. Your ec is to high. Especially if you see contrasting signs, like clawing and upside down canoes on the top of the plant and rusty falling leaves at the bottom. Nuts are being locked out and the plant just isn't eating well because the salts in the soil are higher than the salts in the root zone, MJ eats when the salts in the soil or water is less than the salts in the roots.
 
Jerseykushface

Jerseykushface

Well-Known Member
Roseman said:
PPM for Hanna Chart PPM

Seedlings, Early Sprouts 100 to 250

Early Vegging 300 to 400

Full Vegetation 450 to 700

Early Blooming 750 to 950

Full Mature Blooms 1000 to 1600

Note: EC Calculations are different, here's a conversion chart :
heres a great chart that shows how different PPM can be from meter to meter... EC is the only real universal language...



Remember to discount the ppm of your water.
Click to expand...
So lemme get this right if my tap water is at 100 ppm and i have a seedling i would want to add 100-150 more ppm from nutes to get my total ppm up to 200-250
 
Terry385

Terry385

Well-Known Member
"i have a seedling" how old.. tap water is good for young seedlings

Reliable ppm chart for marijuana??
3.png
 
CAREBEAR-666

CAREBEAR-666

New Member
Roseman said:
PPM for Hanna Chart PPM

Seedlings, Early Sprouts 100 to 250

Early Vegging 300 to 400

Full Vegetation 450 to 700

Early Blooming 750 to 950

Full Mature Blooms 1000 to 1600

Note: EC Calculations are different, here's a conversion chart :
heres a great chart that shows how different PPM can be from meter to meter... EC is the only real universal language...



Remember to discount the ppm of your water.
Click to expand...
Thanks Boss, this is just what this poor Welsh orphan needed, tidy boyo!
 
Budley Doright

Budley Doright

Well-Known Member
When I first started hydro I fed half of what the chart for that product then used my meter to monitor the levels and if they dropped I would raise the EC next fill (every 7 days). I kept detailed records and when I started the next run I added the exact amounts for that EC. I did the same with the PH. As for rust spots, ya their a bitch and no it's not always caused by over feeding IMO. If you have unhealthy brown spotting then you should try to solve it as it does mean something is amiss, I was the same as I'm fuck it their ok lol, after doing some research with my particular setup and water (well) I was able to cure it and now plants are green till chop.
 
Gregor Eisenhorn

Gregor Eisenhorn

Well-Known Member
Budley Doright said:
When I first started hydro I fed half of what the chart for that product then used my meter to monitor the levels and if they dropped I would raise the EC next fill (every 7 days). I kept detailed records and when I started the next run I added the exact amounts for that EC. I did the same with the PH. As for rust spots, ya their a bitch and no it's not always caused by over feeding IMO. If you have unhealthy brown spotting then you should try to solve it as it does mean something is amiss, I was the same as I'm fuck it their ok lol, after doing some research with my particular setup and water (well) I was able to cure it and now plants are green till chop.
Click to expand...
I remember I once raised the ppms to 800, but it was still dropping day after day 9somthign like 50-80 ppms daily). Does that still mean there's too little nutrients? I;m kind of scared of the thought of pushing it up to 1000.
 
Budley Doright

Budley Doright

Well-Known Member
Gregor Eisenhorn said:
I remember I once raised the ppms to 800, but it was still dropping day after day 9somthign like 50-80 ppms daily). Does that still mean there's too little nutrients? I;m kind of scared of the thought of pushing it up to 1000.
Click to expand...
LOL I know what your saying, been there. I really watch the plant more than the meter now and if the plants are happy, green, and growing I tend to feed the same and not push the limits. But yes most things I've read say if it's dropping then raise it.
 
Aeroknow

Aeroknow

Well-Known Member
Gregor Eisenhorn said:
I remember I once raised the ppms to 800, but it was still dropping day after day 9somthign like 50-80 ppms daily). Does that still mean there's too little nutrients? I;m kind of scared of the thought of pushing it up to 1000.
Click to expand...
I end up at 1.7-1.8 EC in most of my setups.
 
Last edited:
Aeroknow

Aeroknow

Well-Known Member
WeedFreak78 said:
How does that transfer over to ec/ppm?

generally 1.8 -2.0ec here, as high as 2.3 on some before i see any issues, but i don't push anymore.
Click to expand...
I found 1.7-1.8 ish to work great for me, around 20 yrs ago. It's what 1/2 strength floraseries is/was.
It's the set it and forget it number(work my way up to it of course) that still works fantastic with most every strain I grow, and in many many dif setups. The exception being soil.
 
You must log in or register to reply here.
Top