A clean tank can not support life. A balanced tank allows waste to be used to feed microscopic life. Without microscopic life everything in the tank will die. Father Fish explains the distinction between Natural and Hi-Tech sterile aquarium setups. Natural setups use dirted substrates and aquarium plants for a balanced ecosystem. Hi-Tech aquariums involve technology like CO2 injection, high-intensity lighting, and nutrient dosing for optimal plant growth. Father Fish emphasizes the importance of choosing aquarium systems that mirror Nature.