40х40 sativa first grow

I am already germinating the second seed and I had a little Plagron seed booster solution left, I added it to the plant and the situation quickly and significantly improved (before that I added water and the situation was still sluggish, but a little better than on the 7th day of 1 week), that's why I decided that it's time to add a little fertilizer at 50% of the nominal amount. I know that the PPM is too high, and the final PH is slightly off the ideal, I will think about what I can do about it. 5.91 PH water to fertilizers and 265 PPM 5.60 PH of water after fertilizers and 670 PPM 5.71 PH after dilution with 210 ml of water 510 PPM