Last question I promise!

I recently found out that I need a PPM meter, so I bought one. I was just wondering, what is the best reading for the best result? Meaning what number should I be aiming for, for maximum benefit/result?
Thanks again guys & gals. lol!!!

all depends on the strain. They all like different dosage. Start at 1/4 strength and work way up

I'm using white rhino, 1/4 is cool but what number should the PPM meter read for good quality water/nuts?

Well in the first few weeks of veg I dont get over 600, than when I head into flower I ram them up to 900 to 1200 depends on the plant. Just up a little at a time

Here are some general rules:
1. Water level drops PPM goes up: Drop your nutrient strength in relationship to the PPM rise.
2. Water level drops PPM stays the same: You may be able to fine tune you nutrient strength, if growth is vigorous leave it alone.
3. Water level drops PPM drops: Raise you nutrient strength in relationship too PPM drop.