How to Prevent Algae Growth in Fountains

Algae is a common and frustrating issue that often appears in fountains. Depending on the environment, algae can regrow within weeks even if you regularly use algae prevention products. Not only does algae detract from the fountain's appearance, but it can also affect its functionality. While it's impossible to completely eliminate algae from a fountain, you can prevent its growth by regularly cleaning the fountain and properly maintaining the pump.

Construct the fountain in a shaded area. Direct sunlight is a key factor in algae growth. To slow down the algae's development, consider placing your fountain in a shaded spot or under a cover.

• If there is no fully shaded area, partial shade can still help slow down the growth of algae.
• You can also use umbrellas or tarps as makeshift covers near the fountain if natural shade is not available.

Connect the pump and link the fountain to a power source. Once your fountain is set up in the desired location, you can use a garden hose to pump clean water into the fountain. Then, plug it in to connect to the power source.

• You can also choose to use dechlorinated water to disinfect and prevent the growth of unwanted organisms.

Use algae prevention chemicals. The best time to use algae control products is immediately after installation or after thoroughly cleaning the fountain. These products are available in grocery stores or online.

• If you're concerned about the health and safety of wildlife that uses the water, you can opt for algae prevention products that are safe for animals. Most algae preventatives sold in pet stores and grocery stores are safe for animals, but it's always a good idea to carefully read the packaging.
• Common algae prevention products include Algae Shield and SeaKlear. If used only for indoor fountains, you can apply one cap of the product for prevention.
• Before using algae preventatives in your fountain, make sure to read the manufacturer's instructions to ensure the product won’t negatively impact the fountain.
• Each product comes with specific usage instructions, but generally, you will need to regularly add algae prevention chemicals to the water as the fountain operates.

Change the fountain water monthly. Replacing the water helps remove algae buildup and prevents its growth in the fountain's pump system. Empty all the water and allow the fountain to dry completely before refilling with fresh water.

• If possible, scrub and clean any dirt or grime on the fountain’s surface and decorative items like pebbles before adding new water.

Clean the pump. The pump keeps the water circulating in the fountain and helps reduce algae growth. Use a sponge or a stiff toothbrush and clean water to scrub each part of the pump.

• If you need to disassemble the pump to clean internal parts, follow the manufacturer’s instructions, as each pump may have a different design.

Install the pump fully submerged in water. The pump will not function effectively if it's not completely submerged. You need to ensure that the pump stays submerged in water for continuous circulation and to prevent algae growth.

• Typically, you’ll need to add more water to the fountain during the first few days after installation to make sure the pump is fully submerged.

Deep clean the fountain. It's recommended to deep clean your fountain every two months. Turn off the power, drain the water from the fountain, and then clean it with a cleaning solution purchased from retail or online stores, or even dishwashing detergent.

• Dishwashing soap is a pet-safe cleaning product, safe for animals like birds and small mammals that may use the fountain.
• Use a toothbrush to scrub the entire fountain to remove algae and other organisms.
• Rinse the fountain thoroughly after using the cleaner. Leftover detergent could damage the fountain.
• Clean the pipes in the fountain using a pipe cleaning tool, available at home goods or craft stores.

Scrub the fountain. If you notice algae growing in the fountain, the first step is to scrub every part of the fountain thoroughly. Disassemble the parts, clean them with soap and hot water, then let them dry before reassembling.

• Clean the fountain with white vinegar or a mixture of one cup of cleaner and 4L of water before using soap and rinsing the fountain. Be sure to rinse well to remove all the cleaner.

Use algae killer chemicals. Unlike algae preventatives, algae killers are used to eliminate algae already growing in the fountain. You can purchase algae killers at grocery stores, retail stores, or online.

• Be sure to read the product instructions carefully before use. Check the label for accurate dosage and usage frequency.
• Opt for algae killers that are metal-free, as they are less likely to discolor the fountain water.

Replace the pump. If algae continues to thrive in the fountain, consider replacing the pump to improve water circulation and filtration. You can either replace the pump yourself or hire a professional, depending on the size of the fountain and your experience with pump installation.

• Fountain pump systems can vary greatly. Contact the manufacturer to determine the appropriate pump type for your fountain.

• Regular cleaning of the fountain is crucial. Regardless of the type of water or algae prevention chemicals used, you still need to scrub the fountain regularly.
• If birds or other animals use the fountain, be cautious when using chemicals to ensure their health is not harmed. Carefully read the product label, and if unsure, contact the manufacturer for more details on its safety.

• Some cleaning agents can damage certain stainless steel parts of the fountain by causing metal corrosion.
• Avoid using cleaners that contain copper for fountains with copper or powder-coated copper components. These cleaners can strip the protective layer and cause these parts to corrode more quickly.

• Toothbrush
• Sponges
• White vinegar
• Dishwashing soap
• Tap water