But even with the filters and water parameters under control, waste and toxins will still accumulate in your aquarium with time. They must be removed by partial water changes – regularly.
Your aquarium’s equipment is mechanical. Lights, filters, heaters, pumps and feeders all fail at some point in time. They need to be checked, cleaned and adjusted regularly. Gravel accumulates toxins. It needs to be cleaned.
Essential water elements are constantly being consumed by your aquarium inhabitants. They all must be replenished.
All of these fish tank tasks, plus generally cleaning up, needs to be done regularly. But, with the best of intentions, many aquarium owners ignore their duty.