The SpectraPure SpectraSelect Plus is a high-performance reverse osmosis membrane designed to produce ultra-pure water for saltwater reef aquariums. It sets the industry standard for removing contaminants, effectively stripping source water of silica, phosphates, nitrates, and heavy metals. This membrane is the core component for creating a stable and pristine aquatic environment, free from the impurities that fuel nuisance algae and harm sensitive inhabitants.

This membrane is rated for 90 gallons per day and features a guaranteed 99% rejection rate, which significantly extends the life of your post-deionization (DI) resin, often doubling its lifespan. Each membrane undergoes a proprietary treatment process to enhance rejection and flow rate, followed by individual hand-testing to ensure consistent performance. Measuring a standard 2" x 12", it is engineered for longevity and is interchangeable with most residential and aquarium RO or RO/DI systems.

This product is essential for dedicated reef keepers and aquarists who demand the highest water quality to protect their investment. It serves as a powerful upgrade for existing systems from brands like Captive Purity, Kent Marine, and Bulk Reef Supply, offering improved efficiency and lower long-term operating costs by reducing DI resin consumption. If you are battling algae or striving for precise water chemistry, this membrane provides the foundation for success.