Northern lights auto

Day 64 refilled resivor 15ml a&b each 5ml emyzines 8ml golden tree 15ml flower stacker ppm 900 ph 6.5 when I watered I notice the ppm before mixing was around 530 so don't now why plant is not eating because as much it's drinking its not eating much nutrients. Day 65 notice droppy leafs started so I checked ppm it's at 1600ppm my fish pump was clogged and not mixing my nutrients so I got wrong reading will have to get water and fix. Day 66 got ro water and flushed and drained resivor and got my ppm to 880 hope she recovers. Day 67 plant looks like it's starting to recover will see in the next day or so.