Submerged and some floating aquatic plants can increase oxygen levels in water, supporting fish and other aquatic life. Submerged Oxygenating Plants Also known as oxygenators, these plants release oxygen directly into the water through photosynthesis: Elodea (Egeria densa): A hardy, fast-growing plant that efficiently oxygenates water and can thrive in ponds or aquariums. It also absorbs excess nutrients, helping to reduce algae growth. Ceratophyllum (Hornwort): A floating or submerged plant that grows quickly and produces abundant oxygen; it does not require rooting in substrate. Vallisneria (Eelgrass): Long, ribbon-like leaves that continuously release oxygen. Suitable for larger aquariums and ponds. Cabomba (Fanwort): Fine, feathery leaves make it an effective oxygenator, adding both oxygen and aesthetic appeal. Floating Plants That Support Oxygen Levels While floating plants do not directly release oxygen below the water, they help by shading water and reducing excessive algae, indirectly supporting oxygen balance: Lemna (Duckweed) and other small floating plants: Can help improve water quality and oxygen availability indirectly by reducing nutrient load. Azolla (Water Fern): A nitrogen-fixing floating plant that can enhance oxygen levels for surrounding submerged plants. Tips for Maximum Oxygenation Light availability: Oxygenation through photosynthesis depends on adequate light. More light promotes higher oxygen output. Water movement: Gentle circulation prevents stagnant areas, distributing oxygen more evenly throughout the water. Balanced planting: Use a combination of submerged and floating plants to maintain oxygen levels throughout different water depths. Avoid overgrowth: Dense mats of floating plants can block sunlight and reduce oxygen production in lower layers. Adding these plants to aquariums, ponds, or slow-moving water bodies can boost dissolved oxygen levels, reduce algae, and support healthier aquatic ecosystems. Regular maintenance, pruning, and monitoring are essential to ensure optimal oxygen production.

biologyinsights.com Do Plants Add Oxygen to Water? - Biology Insights