m0useanswered grow question 10 months ago Your last questions was about PH and EC being really high and when that happens shit locks out, eg nitrogen can get less available, calcium and magnesium stay available in higher PH ranges so it might just need a bit more then .8ml per 1000ml/1L for a few feeds. It should green back up with the N getting more available. follow the feeding ratio guidelines by the manufacture and just dilute down to your desired EC level to avoid a build up. Keep PH of the feeding solution in range 6.2-6.5 in veg and 6.4-6.8 in flower.
Good Luck!