Seedling yellowing: Help

[TripleCchronic]

The newer top leave are effected. Not the brand new leaves but about 70% of the leaves have spots niw. New leaves start out with red spots. Then turn to orange/yellow

 

[Victorytoker]

Roots look good but have some dark spot. Are you using beneficial bacteria? You NEED an accurate ppm meter to run hydro, and an even more accurate ph tester. If you are new note that ph will swing up as your plant takes in nutes, consider this a good sign. Calcium and magnesium are both most available at a ph of 6.2, under 6 is much harder for the to uptake, so if you sit say at 6.6 for any length of time your plant will be deficient. Calcium cannot be moved, Calcium deficient damage will always remain, magnesium is semi mobile, so if deficient the plant will move it from old to new growth.. red spots are likely humidity related, do you have enough air movement ? And what is the rh?

 

[bluter]

post was 8 months ago.... plants are either smoke or compost by now ..

 

[Victorytoker]

Yeah, jve realized that after I typed it lolz :/