Cool, I always love it when people I meet have been to Wyoming. I'll try to post more system pictures and maybe some schematics soon. Hopefully that will make the design a bit more understandable. I'm going to try to do a video walk-through of the system one of these days and show how I plant and what the towers do after that. I'll let you know as soon as I get it posted on YouTube. That's cool that you're in Hawaii. . . I've always wanted to visit- some of the photos I've seen have just been mind-numbingly beautiful. As for the folks who know everything- well, some of them do, and some of them don't! I started into this knowing next to nothing, and arguably still know next to nothing, but knowing next to nothing has let me do some fun stuff that might not have happended if I'd listened to some folks. . . I had a few people tell me that my project was stupid and wouldn't work- because everyone knows that vertical hydroponics just doesn't work!
Well, looks like your pH is pretty perfect. Looks like you are getting some good ideas from some of the other members. I have a baggie of chelated iron here, but it came from a lab at a place I used to work so I'm not going to be a lot of help!
Thanks for joining the Aquaponic Gardening community! I hope you find it a fun place to explore aquaponics. There is a real blend of experienced and new aquapons in this community, so please don’t hesitate to get in there and start asking questions. A great place to start is by checking out the forums and groups. Everyone is quite happy to help out new members – no question is too basic.
We have just one rule: keep it cordial (no flaming!).
As to your question on iron, I've used iron chelate in the past, in very small amounts. What you might be experiencing, though, is iron deficiency in the plants because your pH is too high. Iron is the first element that plants can't uptake when the pH gets much above 7. I suggest you start a new forum topic around adding nutrients to aquaponics and get others opinions as well. You'd be doing the community a favor - this could be a very interesting topic that hasn't been pursued here yet.
Thanks again for joining us, and I look forward to getting to know you.