GMSgrowsanswered grow question 4 years ago Ph perfect products are not the best for hydro grows. I reccomend you switch to either canna aqua or Dutch nutrient formula, DNF. Both were formulated specifically for hydroponics and they have everything your plant needs for a good vigorous grow. Right now your plants are showing a cal/mg defficiency from what I can see. Ph sweet spot is 5.8 in veg and 6.2 to 6.3 for flower. 600 ppm 1.2 ec is alright for now. For hydroponics you need a ph tds 24/7 monitor like the growboss. Or bluelabs. Your ph is probably drifting with the ph perfect crap. Cheers