help its getting worse brown rust like spots

ok for 2 weeks it has been getting worse, I added epsen salt. I use dyna grow and pro tect ph around 6.0 but I have crappy strips to test ph its almost at day 60 of super silvaer haze auto.. in hydro wqterfarm

Soil grower here, so can't help you w/nute issues.

If you were in soil, I'd advise to check for insects b/c that looks like mite damage.

the white dots are from misting with epsen salts..I washes them off though