I'm moving soon so I have tried to put as little mass into the system as possible. The flat at the back is from seedlings, but is full of cinder and baby butter lettuce. The cups in the front are little yogurt cups, nothing planted yet, testing out depths. The container on the right is algae propagation, a recycled almonds container (yummy Fisher almonds). We had some HEAVY winds last night so the lettuce are a little flat.