So I'm sure you guys are going to tell me why this isn't going to work like I want it to, but I get bored on Fridays and decided to switch my smallest seedling over to a DWC system.
I watched this youtube video
and said hey, I have a pool noodle in the garage. Lets see how this works....
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I set it so the roots just barely reach the water, and used General Hydroponics nutes and some cal mag and PH'd the water to 6.
It'll probably be dead tomorrow, but its fun to try new stuff.
Edit - I should probably run a couple wooden skewers through the foam to hold it above the lid, or when the plant gets heavier it might move.