Ppm ?

I am about three weeks into veg and just bought a ppm meter and the reading I get is around 800ppm I was told around 700ppm for veg will this be ok.and if not whats the best way to lower it also I might add the solution is one week old.

I suggest you restart your res and add the level of nutes the makers feeding schedule calls for that week. Then check the ppms and use that as your baseline.