your pH is off, you need to adjust it accordingly. If your in hydro get that to 5.5 - 5.9, if your in soil, get that run off to 6.5 - 6.9. Your seeing the side effects to the start of a pH lockout and if you do not correct this soon, you will have alot tougher time getting out of it (trust me, this is what i have gone thru) If you dont have a digital pen for testing pH, do yourself a favor and get one. My suggestion is to stay away from the Hana product, they have caused me more issues than they are worth.