canna terra pro plus runoff

measured my runoff for the first time. this is my first grow and am growing in ctpp like the thread says. i phed my nute solution to 5.9 and the runoff on all three plants was 6.2-6.3, i onky checked the ppm of two of the plants, ut one of them was at 4500 and the other one was 2880. is that normal?

So have learned a couple things. my plants have what looks like a zinc defiency. im running bio canna nutes, organic nutes with no trace minerals. also no trace minerals in my canna terra pro plus peat based soilless mix. i guess this is a problem i have seen while googling about this soil and the canna product line. going to get some azomite tomorrow and do a quick phed cal/mg ro and add a teaspoon of azomite per gallon. i shouldve waited to water until tomorrow.