One of the earliest comments I got when I decided to use an auto siphon in my hydro setup was that I would be feeding/flooding too often - especially at night. It was suggested that the plants dont feed as much, or maybe not at all, during the night, so all you needed to do was keep the roots from drying out. However, I have been monitoring my rez water levels since I started this grow and just finished another day/night cycle with even closer checking. It turns out my plants drink almost exactly the same amount lights ON and lights OFF. As close as I can measure easily, they drank 1 gal during 12 hrs of lights ON and 1 gal during 12 hrs of lights OFF. I have three clones in a small tent running E/F. NFT, and Meniscus Membrane techniques. The auto siphon Im using in the E/F tote cycles the water about every 12-15 minutes or so 24/7. The other two totes also get the same flow rate 24/7. https://www.rollitup.org/t/three-types-of-hydro-in-a-small-tent-on-one-airpump.960095/ Someone on another forum posted some night time pics of their Ebb/Flood setup and the plants looked really droopy to me. Like they were very thirsty. My plants dont droop at night enough to notice. That made me think that it might be doing more harm than good to stop/reduce feedings at night. So, am I missing something? is there another reason to not feed or reduce feeding at night in hydro?