Sometimes we learn more from our systems when they are not exactly operating at their best than when they are running at their peak. It is currently winter over here in South Africa, and for the first time in years, El Nino’s grip has been broken and we are seeing rain and cold fronts aplenty. So much so that I decided to move my aquaculture-sourced tilapia into the larger greenhouse. The mixed system is essentially running fishless, with a dab of ammonia every now and then. It usually…
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