Killer RDWC

Hi growmies 👋 So since last week a barley added any nutrients i just add water to the system and defoliate some leaves everyday. On tuesday my new PH meter finally arrived & it could not come in a better moment, one of my plants started showing signs of stres and spots on leavs the girls all together did not drink much of the water and i wondered what it could be 😕 Then it arrived... oh my joy 😅 After calibration it showed my solution was at 5.14 PH insted adding ph+ (because my EC is 2.4) I decided to remove about 10l of my solution from the reservoir and replace it with fresh water which has a PH of 6.75, that brought my PH to 5.74 and to my joy when i got to check on my girls on wednesday they drunk about 3'5 to 4 liters of water and the spots on leaves where gone 😁 Since wednesday my plants drink 3 to 3,5liters a day which makes me very heppy on thuresday i just added 50ml. of calmag. I didn't add any more nutrients because i think i just found the upper limit of my nutes and what the girls can absorb and as the whole week and today my EC is 2.4. I keep the Spider Farmer SE7000 at the height of 30 centimeters and run it at 410 Watts which gives me 630 PPFD at centers and 430 PPFD at edges (see screen shots). The plants look happy which makes me happy 😊 All the best to you my fellow growers and thank you for attention I hope you come see my progress next week.