New to hydro and Im growing a plant in a bubblebucket, about 3 weeks in veg. Lower leafs are showing what i think is N-deficiency signs by yellowing leafs but ive been feeding around 400-450 (tapwater included) ppms last week and yellowing keeps getting worse still ppms has risen. My ec meter showed 0.9 when i changed res-water and 3-5 days later its now at 1.1 (550ppms). So that would indicate an already to hot of a soup? Growroom temps 24-26 celsius Res.temp 20-21 Ppms 500-550 RH - 34-40% Somewhat stunned growth, and i cant find the probable cause if nute-lockout either since my pH has been steady at 5.9-6.0. Can someone help me out? Sent from my iPhone using Grasscity Forum