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The article explores the challenges and methods of maintaining a well-planted aquarium with a high fish load. It discusses the balance between aeration, which fish require, and carbon dioxide levels, which plants need. The article highlights successful approaches by hobbyists like John Domokos, who uses advanced filtration and aeration techniques, and the Father Fish method, which employs a natural system with a soiled substrate and deep sand bed. It emphasizes the flexibility of aquarium setups and the importance of choosing easy-to-grow plants for success.

The hybrid low-tech planted aquarium uses wood pellets for CO2 and chemical fertilization, blending Walstad and high-tech methods.

I define a “high tech planted aquarium” as an aquarium with CO2 gas injection to at least 20 ppm and high intensity LED lighting with blue and crimson components (“grow lights”).

The Walstad Method, created by Diana Walstad, offers a natural approach to setting up a planted aquarium. It emphasizes a balanced ecosystem where plants and fish support each other, requiring minimal maintenance. This method uses organic soil and gravel, eliminating the need for CO2 injection and frequent water changes.

CO2 From Food in the Aquarium is one “interesting” approach to providing carbon dioxide to the aquarium. ote I do NOT recommend this method. It is challenging, to say the least.

Most high-tech planted aquariums use a high-tech CO2 injection system. These systems are prone to failures and doing it cheap can get you in trouble.

KH pH CO2 Relationships in the Aquarium is called the “Bermuda Triangle” of aquarium chemistry with good reason. It is very complex and making simplistic assumptions about it can easily lead one astray and kill fish.