The aquaponics system at CEI produces enough lettuce to feed our community twice a day, seven days a week. The fish production is increasing in the next year, and provides one meal a week of fresh tilapia. Right now the system is good, but does have a few minor opportunities for improvement. One issue we are facing is an over-abundance of solid waste settling out at the bottom of our deep water hydroponic beds. One way to solve this “problem” is to install additional filters which would have to be purchased, shipped, installed, and run on electricity. The filters would use more fresh water to clean, and require more time and maintenance. This isn’t the ideal solution when we are trying to reduce imports, simplify operations, maintain affordability, and conserve water.
We instead looked for a permaculture way of solving the solid waste issue, and found one!Last Friday a shipment arrived at Governors Harbor Airport of three small boxes from a company in Florida called Miami-Aquaculture Inc. Inside the three boxes were approximately 2,000 post-larval giant freshwater prawns (Macrobrachium rosenbergii) which can grow to twelve inches in length in just one year. Continue readingby