Аквалог is an online Russian-language aquarium community built around an extensive discussion forum for hobbyists, from beginners to experienced fishkeepers. Members can ask questions, share practical experience, and exchange advice across freshwater aquarium care and related topics. Beginner sections offer a welcoming place to get started, while dedicated help forums address urgent questions and common problems.

The community covers aquarium selection and design, water quality and preparation, substrates, lighting, filtration, heaters, compressors, decorations, and other equipment. Members also discuss do-it-yourself aquarium projects, furniture, automation, cooling, fertilizers, and CO2 systems. Fish-focused sections explore species, selection and care, compatibility, disease prevention and treatment, feeding, and breeding. Further topics include aquatic plants, invertebrates, freshwater shrimp and other crustaceans, and the microscopic life found in aquariums.

Alongside discussion boards, Аквалог provides reference material such as an aquarium terminology section and areas for photos, blogs, events, and community activity. Its forum format helps enthusiasts learn, troubleshoot aquarium challenges, document their setups, and connect with others who share an interest in aquatic life.