Maintaining a stable and healthy aquatic environment is the cornerstone of successful aquaristics. Regardless of experience, every aquarist faces the question: how often and in what volume should water be changed? This process not only removes dirt but is also critically important for chemical balance, preventing the accumulation of invisible toxic compounds. The correct choice of water change volume (10%, 30%, or 50%) depends on many factors: stocking density, presence of plants, filtration type, and, of course, the maturity of the biotope itself.
