We do this in the salt water aquarium hobby. It is not easy and requires a lot of equipment to keep the food chain flowing. 1. You have to grow a phytoplankton

We do this in the salt water aquarium hobby. It is not easy and requires a lot of equipment to keep the food chain flowing. 1. You have to grow a phytoplankton culture (the base of the food chain) https://melevsreef.com/articles/10-step-phytoplankton-culture https://melevsreef.com/articles/10-step-phytoplankton-cultur... 2. Then you have to map out to the zooplankton culture chain you want to grow. Usually in the aquarium trade the target are foods that larval fish will eat etc. There are only a few types commercially available. So you would never see the diversity you are seeing in the article. Conclusion, you can only do it with fresh sea water from the ocean. I would recommend taking a sample from 0 to 10ft on a reef during a full moon or where there is a lot of light. You will see much variety!