i dont like the burntness on the leaf already ( the tip) that is where nutrient burn shows its ugly head first, i would flush em with corrected ph water... i guessed i have changed my mind... this way you can see if they get better or worse and then you will know if they need food for sure

but you just got to wait tell they dry out again. by flush i mean slowly run maybe as much water as your container that your plant is in now to flush the built up salts on the roots... i dont know hopefully some one else will chime in with there 2 cents.