Nutesburn?

Looking at your diary the "soil" your using looks to be more so a soil-less mix but hard to tell. Can you find what its made out of? soil and soil-less have some different requirements in terms of PH. Giving your feeding levels and EC I think it was fortified and their is to much nutrition in the medium at this point. your Ec was .3 and ppm was aorund 200. that's not to much for a week 3 plant. You could try and flush it out or just use plan water for your next feed. allow it time to take up the nutrients. If and when your flushing you want to read the EC/PPM runoff of the plant as it will tell you how much is coming out. If this number is 50-100 higher in PPM then you know for sure the medium was holding onto to much salts. With Ph perfect line up you don't need to worry so much about the PH levels, but its a good idea to always bring you water to 6.5 before adding nutrients. They suggest you add in Micro then Grow then Bloom string lots before adding the next one in. If you know whats in your medium or soil let us know as this will delicate what other things might be need for you grow. If it is soil-less you will want to add in some calmg for the plants. they will need it in the later days. and if there is coir in the soil it will also need calmg or it will steal it all from the PH perfect lineup if it was unbuffered. Keep us posted Best Of Luck and Happy Growing!