agreed, always add nutrients to the water, first :thumbsup: ... I generally use full-strength during first half of flowering, then cut to half-strength, the last half, with none the last few days ... plus, I add a tablespoon of Non-Sulfured Blackstrap Molasses, per gallon of mix, during flowering ... I like to re-check the pH, after the solution sits for a hour, or so, before using it ... after awhile, you'll start 'reading' your plants, you'll know if you need to add, cut back, or just stay the hell away !