Appears to be nute burn.... Your plant(s) look too small for full strength. You're also not supposed to give full strength of all three at the same time, if that's what you're doing. The amounts should fluctuate, determined by the growth period....

If you click on the link in my sig, it will take you to the troubleshooting form. Go there, copy the questions, come back here, reply, paste, answer the questions and we can better assist you with your deficiencies prob....

CGI::::::