For large-scale commercial operations, it’s usually not financially feasible to purchase pre-made kits in a large enough volume to support a profitable business. Building a system from free or paid plans is a better option, but each system has its drawbacks and will only work in certain areas and climates. If you want a custom aquaponics system that perfectly fits local market demand or works around an unusual limitation in your area, like short summers or rainy seasons, you’ll need to design your own system from the bottom up.