Any idea on what is up with my lower leaf on 4.5"? The started out with 20-10-20 300 after plant. Now they are on 17-5-19(plantex)250ppm with 15-5-15CalMag 200ppm @ every other feeding.
The prefinished points we got in are fine, just the 4.5" we grew. Maybe ammonia tox?

Thanks

Hi Tim - We have some questions for you which you will see in the commments of your previous post. This doesn't look like what we would expect to see with ammonium toxicity - ususally that shows up as an overall yellowing of the foliage and leaf drop. Get back to us with some answers to our quesions and we'll go from there. Thanks!