Hey @firehead the rig is on my Journal, made from fish tank pump & plastic candy jars just bought small DWC cups to fit and switched to clay balls as the perlite stains.
Original was built for Solo Cup challenge, so it has larger 38 oz to fit solo cup buffer in them with micro holes. Testing to get from seed to a foot tall for flower in 3 weeks.
Can fit 15 per stackable bin with 32oz jars from amazon