Third system

[KevinL]

Looks good, wont be long before you won't be able to pull those net cups out all the way there will be so many roots. Roots like nice and healthy.
As they get bigger, you might want to think about have a large amount of nutrient in your resevior because it'll start sucking up fluids like crazy and you don't want it to get to low before you can replenish the used amount of water.
When I had my first NFT, I had some days it was using 8 or more gallons in 24 hours