I ask a basic question instead of helping you take a shot at me
did you read anything before you started your endeavor?
how do you know about ppm's in the first place?
it's like asking "how do i pour soil into the bucket"?
if you had a basic understanding by reading or reading the label before you came here, you'd have your answer.
one thing: have you invested $200 in your carbscrub yet?..do you know what one is?
seriously, i'm not trying to be mean rather "tough love"..you need to understand certain
concepts before moving from point a to point b..the why?..you need this basic training.
ppm: part per million (increase: more solution, decrease: more water) tap is usually around 100ppms which is included in your overall measure of solution.*
ph: solution acidity (lower ph: lemon juice, increase: baking soda)
*keep in mind when you add nutes to water it significantly lowers ph..you nute your water to the desired ppm's then ph it..in that order..once you ph it that will change the ppms again usually around 50-100..just leave it or (what i do) slightly under ppm to pre-correct the ph ppm.