These were the structures that would be floating at the surface made out of some inexpensive plastic material that'll allow the algae to grow, and we had built lots and lots of designs, most of which were horrible failures, and when we finally got to a design that worked, at about 30 gallons, we scaled it up to 450 gallons in San Francisco.
Aceste structuri care ar pluti la suprafaţă confecţionate dintr-un material plastic ieftin care să permită creşterea algelor. Am imaginat multe forme, marea majoritate eşecuri oribile, şi când, în final am obţinut o formă care funcţiona, la 100 de litri, am mărit-o proporţional la 1700 de litri în San Francisco.