Well, my NFT system sprung a leak. 10 gallons of nutrients GONE in one night. Thank goodness I had the foresight to install catch buckets!!!!!!

There was quite a bit of stress, obvious signs of lack of water. took the two empty channels, completely disassembled them, went and bought some liquid nails, and used a syringe to inject a seal in the end caps, plugged them on tightly, then sealed around every crack I could see. Once those cured (I kept hand-feeding water every 15 minutes while waiting the 12 hours for the stuff to cure,) I moved the plants ever so carefully in to those channels, then went to work on the other set. I also went ahead and sealed up around my water level indicator since the reservoir was bone dry. Right now, no leaks. The plants have perked back up. I'll get a picture once the lights come on and I'll post.