Nut releated burn. HELP ASAP. (pictures inside)

Well 6 days have pass since my Soil flush , and although old burnings leaves seem to get better , new ones appear in younger leaves.(off course not as big as the previous ones- but still they have this yellowish ending at the edges and some little burning at the end) Is this normal ? did the soil flush failed to work ? will I be needing to do a new one ? and finally how serious IS after all a nutrient burn ?
As for the soil flush i only used 3 bottles (1,5 lt) o mineral water in each plant , so maybe it wasn't enough , I don't know... (i have2 plants, 4 weeks + 2 days old in vegetative period , organic soil under an 400w HPS. Used a nut only once then a nut burn came up , did a soil flush and been watering with tap water ever since)
Since i am a begginer a get very anxious over my plants... Appreciate any help , thanx.

it could be nute burn, but it looks more like a cla/mag deficiency, more along the line of a mag def. Did you put dolomite lime in the mix, have you been using cal/mag? A flush is using twice the amount of water as the size of the pot.

my guess is that the soil flush didn't work. Does it look really bad ? What are my chances? I think I'll do an other soil flush (this time with the correct amount of water) and then add some Mg... what do you think ? Not dolomite or anything , just used once an N-P-K nut, nothing more

I think you're in the same situation as I am. I burned my plants and then after flushing became so worried about burn they became deficient. Slowly bring back some nutes and they should recover. And you shouldn't expect burned leaves to ever recover - they are toast. Just make sure the ones that are still green stay that way.

It also looks like you're overwatering a bit.

No mared juwan, you guys have totally different problems just look at the pics!! And where do you see signs of overwatering?
Dr. Zeus you need to put a teaspoon or two of dolomite lime per gallon of water and use it everytime you water. A flush will not help you, you did not burn your plants. You have a cal/mag deficiency, the affected leaves will die but new growth will be ok. If you don't correct the problem your plants will die. For the future use 1 tablespoon of dolomite lime per gallon of mix to prevent this problem.