Hello after investing A lot of money and time Im finally at week 5 of flowering and just before the end problems began to appear: It started 5 days ago, Ive noticed some of the leaves turned brighter, and some yellow dots appeared, after calling A friend Ive started using only fresh water without fertilizers with 5.8 ph but not only there is no change, 2 days ago Ive noticed some of the leaves began to curl and it seems (at least for me) that the flowering stopped or slowed down...this is my first crop and its really important to me that it would grow well... Some details about my system: 800w HPS lamps (2x400) running 12 hours per day flow system with 3, 15 min each watering hydroton as platform temp 25-30c during day humidity 30-40% EC 1.8 (today its only fresh water so 0.9) PH 5.8 2 things Ive noticed (if relevant): after each watering PH goes up in about 0.2-0.4 and needs to be balanced after each watering EC goes up and needs to be balanced Thanks for the help...hope you could help