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ppm for cannabis in soil

Where do you keep ppm nutrient levels in soil

Dboi87
Well-Known Member

i recently invested in a ppm meter and it seems like you can find ppm feed charts for hydro pretty much anywhere but for soil it seems Dyna gro is the only company to post a soil ppm chart. It seems in soil they recommend less than half the ppm concentration that they do in hydro if I remember correctly.

I was wondering if anyone else here measures there feeding schedule for soil grows with a ppm meter and in general how much do your plants comfortably consume in soil?

anzohaze
Well-Known Member

Soil is a bit different. soul will hold onto nutrients or salts (same thing ).

When I ran synthetic dependent on what soil your starting with I used fox farm and once I saw issues I started off with 300ppm of nutes and slowly went up until the plant showed signs of burn and then backed off a fee hundred ppm. I see people running 1500ppm + etc but I stayed between 8-1100ppm depending on strain and age of plant. Water feed water water feed. Similar to that you may need to water more often or less often depending on pot size. ThereS no this was only it’s what’s best for the plant
Once you understand how to read a plant etc etc you can start really tweaking your nute regimen and do whats best for them

JDGreen
Well-Known Member
hotrodharley
Well-Known Member

Comparable soil to hydro conversion – start your feedings at an adjusted 300 PPM. Increase to 500 PPM after watering two times with plain water. In my experiences with both. Use veg nutes well into the 3rd week of bloom and then do your bloom nutes starting at 300PPM and repeat like in veg.

Adjusted to me means subtracting your water going in (which you measured for PPM) and adding nutes so the nutes = 300 PPM. If your water is 110 PPM out of the tap you want around 410 PPM total.

hotrodharley
Well-Known Member
JDGreen
Well-Known Member

A ppm meter simply tells u how much feed is in ur water. And because soil holds nutes and salt the ppm in each watering would b drastically different depending on ur soil and feed. Hydro needs ppms to be more accurate because one theres no.buffer, and two nothing hold nutes, I have never used a ppm meter for soil it entirely unnecessary because u kno how much feed u put in. Its just parts per gallon instead of parts per.million.

Hydro need ppm for accuracy. U also.measure EC. And PH which can effect each other. Soil foesnt need that because there no direct root to nutrients contact

JDGreen
Well-Known Member
Dboi87
Well-Known Member

Soil is a bit different. soul will hold onto nutrients or salts (same thing ).

When I ran synthetic dependent on what soil your starting with I used fox farm and once I saw issues I started off with 300ppm of nutes and slowly went up until the plant showed signs of burn and then backed off a fee hundred ppm. I see people running 1500ppm + etc but I stayed between 8-1100ppm depending on strain and age of plant. Water feed water water feed. Similar to that you may need to water more often or less often depending on pot size. ThereS no this was only it’s what’s best for the plant
Once you understand how to read a plant etc etc you can start really tweaking your nute regimen and do whats best for them

hotrodharley
Well-Known Member
Dboi87
Well-Known Member

A ppm meter simply tells u how much feed is in ur water. And because soil holds nutes and salt the ppm in each watering would b drastically different depending on ur soil and feed. Hydro needs ppms to be more accurate because one theres no.buffer, and two nothing hold nutes, I have never used a ppm meter for soil it entirely unnecessary because u kno how much feed u put in. Its just parts per gallon instead of parts per.million.

Hydro need ppm for accuracy. U also.measure EC. And PH which can effect each other. Soil foesnt need that because there no direct root to nutrients contact

When feeding I feel it’s still good to know the strength of your feeding solution. I was taught to water slowly with plenty of run off for two reasons. It ensures that your medium is thoroughly saturated to avoid dry pockets. It also helps to wash away any salt buildup and gives a fresh start with the new solution.

the main reason I’ve been paying attention to my feed strength is so that if I ever decide to try another brand of nutrients, I can properly gauge how strong to mix them for a fair comparison. The other day I mixed sensi bloom at 1/8 of the recommended dose and it was still higher than I typically feed with Dyna

i recently invested in a ppm meter and it seems like you can find ppm feed charts for hydro pretty much anywhere but for soil it seems Dyna gro is the only…