Seachem Reef Phosphorus Supplement for Marine Aquariums, 250ml

Seachem Reef Phosphorus 250 ml is a concentrated phosphorus supplement designed specifically for saltwater reef aquariums. Phosphorus is a vital element for coral health and the overall functioning of photosynthetic organisms like zooxanthellae. This formula allows aquarists to safely raise phosphorus levels in nutrient-poor reef systems, promoting vibrant coral color and steady growth.

Reef aquariums with very low phosphate and phosphorus levels may experience coral paling and slowed growth. Seachem Reef Phosphorus helps to balance this by providing a controlled and measurable dose of phosphorus. The formulation is nitrate-free and easily integrates into your aquarium’s dosing routine.

This supplement is ideal for reef hobbyists aiming to replicate natural reef water chemistry. With consistent use, it supports healthier corals, better polyp extension, and a thriving biological balance in marine tanks. Each 250 ml bottle treats thousands of liters of water, making it a cost-effective option for regular maintenance.

Seachem’s trusted formula ensures reef-safe dosing, free from unwanted contaminants. For optimal results, use in combination with Seachem’s other reef supplements. It is recommended to test phosphorus levels regularly to maintain proper balance and avoid excess nutrients.