So the system has been running now for about two weeks. About a week ago I finished the second tube with 13 more lettuce starts and mounted the air
pump and timer with a cover. I've had to replace a few starts so far, most likely because of the temperature and lack of sun here in the Northwest this year.
I'm also a bit more confident with the
nutrient and pH adjustments. The TDS meter seems to be working just fine, and I think the pH test kit is helping me stay in the right 5.5-6.5 range. It's nice to see some noticeable growth now, too, with our recent warmth and sun. Here are a few of the plants so far:
About two weeks in the system
About two weeks in the system
About a week in the system