Choose and maintain aquarium equipment with straightforward guidance on filters, heaters, lights, pumps, testing, cleaning, and water changes.
Read the newest practical guides, tips, and explanations in this section.
The right aquarium light supports plants and shows off fish without fueling algae. Learn how to choose lighting and set a healthy photoperiod.
The right heater keeps your fish at a safe, stable temperature. Learn how to size an aquarium heater, the types available, and how to avoid failures.
The filter is just a box. The media inside does the work. Here are the three jobs filter media performs and how to maintain each without crashing your tank.
Cleaning a tank the wrong way does more harm than not cleaning at all. Here is how to remove waste without wiping out the bacteria that keep fish alive.
A test kit is a diagnostic tool, and most tank problems vanish once you measure instead of guess. Here is what to test, how often, and with what.
Filtration does three jobs: mechanical, biological, and chemical. The filter type matters less than capacity and maintenance. Here is what truly counts.
Browse related aquarium guides.
Tank setup, cycling, stocking, and the first weeks of fishkeeping.
Species profiles, compatibility, tank size, diet, and everyday care.
Marine fish, corals, reef chemistry, filtration, and stable saltwater systems.
Water quality, quarantine, common health concerns, and responsible treatment.
Aquatic plants, hardscape, lighting, layouts, and practical design ideas.
Nutrition, feeding amounts, schedules, food types, and species needs.
