The tips have been burning since week 2.its week 5 now and I've only used nutrients once. Even that was 1/4 strength.
Every single time I use plagron light mix. It's always burning them, even from plain tap water with pH down to get pH to 6.5....
When I used BioBizz only once. I never had this problem.
I think I will go back to BioBizz as I had 6 ounces on my last grow. If this grow doesn't get 6 ounces I know what to do.
There is absolutely zero way I have nitrogen toxicity when I haven't used nutrients. Plagron light mix must just be that HOT!