Abstract: The vertical indoor ecosystem invention is an indoor vertical modular structure and method. The system includes at least one: retention tank, grow bed, grow tank, structural frame, recycling water supply, light energy supply and control units. Each grow tank supports both terrestrial and/or semi-aquatic plants and fresh water aquatic species. The grow tanks are built in to the structural frame in multi-level vertical tiers connected horizontally and/or vertically. The lowermost retention tank regulates water quantity and quality and typically houses larger aquatic species. Generally, the waste water from the retention tank travels up through a water pump to the top grow bed to filter water. Water travels down to the next lower level grow tank by gravity wherein plants uptake nutrients. Water returns to retention tank in a cyclical manner.