Hello all! I am a long time reader first time poster ive always gotten great advice just looking here but now its a problem i cant seem to diagnose. im doing my first hydro grow after dozens of soil attempts and various pet projects. Since I lack the space to grow more than a few ounces at a time or a few smaller plants. Anyways, I changed over the res yesterday morning first thing into the 5th and 6th week late blooming solution before i go into a week of bulking and molasses and then a week of pure flush. During the switch I noticed that my main branch that accounts for about a thrid of my plant is wilting and yellowing and looks like it has no water or sunlight even though it has an abundance of both. There is no root rot, the nutrient solution isnt too high on ppm (about 950 as I like to start low and work up the concentration). The medium is moderatly watered coco coir and my timer goes off for 30 mins three times a day evenly spaced so one happens in the middle of the night the morning and the afternoon but if it was over watering wouldnt I see symptoms across the whole plant? It does have roots that reach past the pot and dangle into the res water and one particularly long root i think is responsible for getting water all the way to my largest branch. Now if I let those few roots touch the water source at all times could it be over watering? Im kind of lost Ive never had this issue in soil grows any help out there?