A comprehensive guide to biotope aquarium concepts, substrate selection and layering techniques, microbial community cultivation methods, and complete setup protocols for building ecological self-purification systems using substrate layers.

Based on mass balance principles, this article establishes a quantitative matching model linking feeding amounts, fish metabolism, nitrification conversion, and water change intervals to guide scientific feeding and water change planning and optimization.

A systematic guide to dissolved oxygen principles, aeration equipment selection and modification schemes, water flow design, and emergency backup for high-density stocking in space-constrained small aquariums.

A detailed guide to the etiology, pathogenesis, standardized temperature elevation and salt bath treatment protocols, and medication guidelines for ich (white spot disease), with complete treatment procedures and precautions.

An in-depth analysis of the underlying technical principles of aquarium filtration systems, covering layered configuration strategies for mechanical, biological, and chemical filtration, along with filter media selection and arrangement protocols.

A comprehensive guide to CO2 supply principles and methods for planted aquariums, comparing pressurized cylinder systems, DIY yeast methods, slow-release tablets, and other approaches with practical implementation techniques.

Targeted protocols and hands-on procedures for precise control of temperature, pH, hardness, and other core water quality parameters based on the physiological requirements of tropical fish, coldwater fish, and marine species.

A systematic guide to causes, symptom identification, rapid detoxification protocols, and preventive measures for ammonia and nitrite poisoning in ornamental fish, covering water changes, aeration, detoxifiers, and fasting procedures.

A standardized guide to the complete process from fish purchase to tank introduction, covering transport stress mechanisms, temperature and drip water acclimation procedures, quarantine protocols, and post-introduction observation management.

This article details the principles, rapid establishment methods, and cultivation techniques of aquarium nitrification systems, with solutions to common problems for scientific new tank cycling.