You have a lot of plants there and it's just nice to see them especially those newly grown onions and lettuce.
I hope that you can plant your onions soon to have a good start and your lettuce also. By the way those lettuce in hydrophonic did grew well last time as shown in the photo. I think when it comes to it, that method is the best.

And those trays made me excited also as I read about it because I really look forward what plants you will grow there.😊.
Happy planting.