What is ppm?

I just got what i thought was a pH meter but its a ppm meter. what can i use this for? what ppm should my water be?

ppm= part per million.

you want different ranges in different stages of growth ...

lower ppms during seedling stage around 800 ppm

around 1200-1400 ppm for veggin...

1200-1700 throughout flowering...

It's good to know if you already have the meter...

Does ppm have anything to dO with ph? How would I adjust ppm?

kmksrh21 said:

ppm= part per million.

you want different ranges in different stages of growth ...

lower ppms during seedling stage around 800 ppm

around 1200-1400 ppm for veggin...

1200-1700 throughout flowering...

It's good to know if you already have the meter...

Click to expand...

from what i have read in several forums, 400ppm for veglings, slowly work it up to the 600-800ppm range mid veg (maybe 3-4 weeks in) then maxing out around 1200ppm during the peak of flower. toward the end of flower you want to bring the ppm way down and use more of a flushing agent. if you use the measurements you could be flirting with some serious burn. some plants can handle it, most can't.. less=more with nutes. better to be a bit short than to burn the heck outta your babies.

ppm is determined by the nutes/minerals in the water.. adding 1 tsp of a veg nute in a gallon of water will put the ppm at say 300. add 2 tsp in a gallon of water it will go to 500-600.. it is basically just a measure of what is in the water..

this is exactly what i needed to know. thanks man.

So to lower the ppm's you just need to add ph water? Is that right?