@Bofig
It's a simple, 3-tier NFT system that you can get on Amazon. It does take some customization to get it productive. The addition of lights... especially for top tier.... then a reservoir and the right pump.... Reflective panels around it DIY from space blankets. Always a big air stone in the water.
To mount the lights I just zip tied them to 1/2" rigid insulation. Less chance of mold and light weight. I also spray glued the space blankets to it.
What I do now that I have it honed... I succession plant... the bottom is the nursery... this is where the tiny seedlings go.... as they grow them move on up to the second floor where the mature and gain size... when they're strong enough, and the Penthouse is getting rough and depleted..... they move up to the top floor... It took a while but now that I have my timing down... our family has not had to buy lettuce for years.
I have a decent EC Meter for nutrient levels. I recently put in a float switch to fill the tank so it's very low maintenance. Maybe once a month I spent 20 minutes to clean up the tank and once a year (while the outdoor garden is in harvest) I pull it apart and scrub down the tubes.
The greens I do are leafy, cut and come again. most head types would be too much of a space investment. Grand Rapids lettuce is a favourite here. Huge, cripsy leaves that grow inside 40 days .
If you have a bit more space, you can do really nice curly heads of something like this Tango
Also, that bottle of wine was full when I saw it last...




It was a PITA to initially get it all dialed in but now it's just something that I don't even notice....