Fish can survive in ponds during winter, but you must take proactive measures to ensure their safety. Installing a pond heater or de-icer, reducing feeding, and monitoring water quality are essential to keep your fish healthy and safe.
No, not all plants must be removed from your pond before winter. Hardy aquatic plants can survive colder temperatures, but it's best to trim them back to prevent decaying plant matter from entering the water. However, for sensitive plants that cannot withstand freezing temperatures, consider moving them indoors or to a greenhouse.
In milder regions, you may continue running your pond pump and filter throughout winter. Consider turning off your pump to prevent ice damage in areas with harsher winters. However, ensure that you have a pond heater or de-icer to provide adequate oxygenation.
You should regularly test your pond's water quality during winter to ensure your fish are safe. Perform weekly water quality tests to monitor pH, ammonia, nitrite, and nitrate levels. Make any necessary adjustments to maintain proper water chemistry.