As temperatures rise in the summer, garden ponds require more upkeep. Warm water holds less oxygen than cool water, and the buildup of carbon dioxide promotes algae growth. Summer is also the active growth period for many pond plants and animals, which means more waste, can begin to build up. Left unattended, a small pond in summer can quickly become a smelly, algae-filled mess. Pond filters are keys to preventing this.
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Aerators and Aerated Rock Filters
Several studies have shown that aerated rock filters are especially effective at removing ammonia from ponds in the summer. The aeration is the vital factor here, as the same studies show that anoxic rock filters are not as effective. Water filters combined with an adequately sized pump will ensure that your pond receives proper aeration during the summer. A pump should be able to move at least half the volume of your pond in an hour.
Standard aerators can also assist with the health of the pond. They promote water oxygenation, can help the pond resist ice formation during the winter, may include other fun features (like LED lights), and help control the growth of algae. Overall, they are a useful tool in creating a healthy environment for fish and plants.
Biological Water Filters
Nitrogen builds up quickly in summer months, and so a biological filter is important in addition to a mechanical filter. When shopping for pond filters, make sure that both biological and mechanical methods are involved. Biological media in filters can be gravel, sand, or even plastic beads. To be sure the filter you buy has a biological component, look for terms like “bio-media” or “bio-filtration”.
Solar-Powered Pond Pumps
Summertime may require you to run your filter constantly, which requires quite a bit of energy. Using solar-powered pumps with your filter will reduce the cost of running the filter for extended periods of time.
Pond Filter Maintenance
Even if you buy the best pond filter available, it will not do any good if you do not maintain it properly. Clogged filters promote anaerobic bacteria, which are generally to blame for a smelly pond. Routinely clean your pond filter to prevent a build-up of these bacteria, keeping your pond clear and fresh all summer long.
The answer to the question “What pond water filter is best for summer?” isn’t necessarily a particular brand or model of pond filter, since companies come out with new models all the time. Instead, use the tips above to find a filter with the best qualities—good aeration, both mechanical and biological filtration, and when possible, solar power. And above all, remember that the real best water filter is a clean water filter.
pondboss® is a distributor of pond supplies and water features; their products are found in garden stores around the U.S. and Canada. They believe in promoting education and awareness among pond owners. Find more tips and information at thepondboss.net.
