what is my problem? PICS! helllllp!!!!!!!!

here are my 3-5 week old 1st time hydro plants.....ph is around 5.7-6.0, ppm has changed due to over ferting, and starting to add more nutes now due to yellowing. they are in rockwool with hydroton in a pot. i top water and feed maybe every other day so far. bagseed, under cfl's. using floa nova grow and sometimes super thrive. what should i do???????????????

After OVER fertilizing dont add more nutts, thats just....nutts!:D Ph has to be 5.8 -optimal range for hydro growing. Do you test your EC (ppm) levels before and after watering? You really should, couse this looks like a nut burn. And you should flush your babies from time to time, lets say every 2,3 weeks, just to keep on the safe side.
Good luck....
 
Definately nute burn buddy. I find it wierd though how the burning/dying of the leaves are mostly in the bottom like if it were a nitrogen def. Anyways PH is good were u got it. Flush those girls out suspend all nutes for a few days.
 
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