Ppm problem help please

The most important thing to monitor in any grow is your pH and I don't see that recorded in your diary... the yellowing edges of the leaves (if that's what you're talking about) is a deficiency that is most likely caused by the pH being out of whack but could also be caused by a lockout due to too much nitrogen - but since there's only one week in your diary, it's hard to tell ... but your pH should be sitting between 5.8 and 6.0 for coco at this point and the plant will be able to absorb any of the nutrients it needs unless it's gotten too much nitrogen in the recent past. If THAT'S the case, then you'd need to do a flush... 3x the pot volume of pH'd water through her. Good luck!