Super Lemon Haze / RDWC

This week ( last 4 days) the plant took off. The roots reached the nutrients rich water and the plant is growing very fast. The PPM dropped from 320 to 290 in the last 4 days and the PH is going up. I had to adjust down the PH tow times those last 4 days. My CO2 levels are kind of high ( between 650-1000) without adding any CO2. I’m trying to keep the temperature at 78 degrees Fahrenheit day time and 73 degrees Fahrenheit at night. Humidity swings a lot because of the AC . I’m using a humidifier and I try to keep it between 60 and 80% RH day time and 50-60% RH at night. After I cahanged the water at day 21 I increase the light intensity to 42%. For light I’m using Fluence Spydr 2i along with the fluence dimmer. I’m a beginner, this is my 2nd grow and I don’t have a lot of experience. I will really appreciate any comments or help if you guys notice that I’m doing something wrong. I’m here to learn and gain experience because I love this stuff!!