Help! What does PH & PPM Do?

RustyWeed

Member
Hey everyone, so I went shopping and got me a ph tester and a ppm tester.

I am in week 2 of flower in my grow. I am using coco as my medium.

The guy that owns the hydro store told me that my ph should be at 5.5 - 6.0.
So I do that, and my plants look great. But, what does ph mean and what does it do?

And he also told me that my ppm levels should be at 800-1000 depending on the size of my plant. I guess I'm doing ok, cause every time I drop my meter in the water it reads 840-900. Again, myx plants look great! What does ppm mean & do?

Thanks for the help...
 
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