Day 5 and all of the lettuce seedlings are quite visible above the rockwool cubes.
For reference, the square rockwool cubes are leafy veggies, the round ones are herbs. That's why you don't see anything from those.
Spinach still hasn't done much, but it takes up to two weeks for germination. No pics of that, yet. I'll put some as soon as I see sprouts.
I'm also not going to start a
nutrient regimen until everything has sprouted. So very likely for the next few weeks this will be simple pH controlled tap water.