yours look better then mine, i hit it with some neem and it burned the shit out of them. my nutes was 1.9ec and they were fine with that, after the neem they didnt like it. suffered from burn marks everywhere, brought the ec down to 1.4 and been misting them with water.
i run a sealed room with co2, co2 is set at 400ppm until they get better. backed off both my 1000hps to 600w(lumatek dimmable). you'll be fine, mine was worser, check my thread in plant probs.