Been using GH flora series low-mid feed chart. Did add 5ml/5gallon of HydroGuard, only thing that changed.
4x4 tent, 400W HPS + 260W LED, room 80*, water 75*, 4 -5 gallon buckets with 5gal res, not sure bout lux, but EVERYTHING was fine till today. Used same mix many times with happy plants...