I am working on a project regarding a space settlement, and I must work on a chapter related to the nutrition of the settlers. It seems that algae is used as food in a lot of cultures, especially in Asia, but I'm unsure if growing algae is space- and resource-efficient. The fact that it doesn't require soil is attractive, so is the controlled environment. I also read that they grow pretty fast. What size should an algae cultivator be to produce about 6 tons a week? How deep/wide/long should it be? Any insight will be appreciated.