At Air, Water & Ice, we focus on providing quality RO membranes for drinking water and aquarium membranes alike. Our team prioritizes quality and reliability when it comes to providing clean drinking water through reverse osmosis systems and maintaining optimal conditions for aquariums.

We achieve this by utilizing top-notch Axeon and Dow Filmtec membranes in every system we construct. Questions about our RO membrane products? Please contact us at, or call us at (772) 461-0256.

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    Reverse Osmosis & Aquarium Membrane Overview:

    Why choose RO membranes or aquarium membranes from Air, Water & Ice? Here are just some of the key points to understand about these membranes and their importance:

    • Membrane Selection: We exclusively use Axeon or Dow Filmtec membranes in our systems. These membranes are renowned for their exceptional performance and durability, ensuring the highest level of water purification.
    • Variety of GPD Options: Our range includes 50, 75, and 100 GPD (gallons per day) Dow Filmtec membranes, which are specifically designed to operate at 50 PSI (pounds per square inch) pressure. The average PSI in U.S. homes is 65, showcasing the effectiveness of our systems even under less-than-optimal pressure conditions. Additionally, we offer Axeon 150 GPD membranes rated at 65 PSI, providing even higher water production rates.
    • Longevity: With proper maintenance, our membranes typically have a lifespan of 3 to 5 years. Regularly changing prefilters at least once a year is crucial to ensure optimal membrane performance. In cases where prefilters are neglected, membranes may last around 1.5 to 2.5 years, depending on usage levels.
    • Aquarium Membrane Replacement: In the context of aquariums, we recommend replacing membranes when they fall below a 90% rejection rate. This ensures that your aquatic environment remains pristine and free from contaminants.
    • TDS Testing: To determine the efficiency of your system and whether membrane replacement is necessary, we recommend performing a Total Dissolved Solids (TDS) test. This straightforward process can help you assess water quality accurately.

    By prioritizing the quality of our RO membranes and offering guidance on maintenance and testing, we ensure that our customers have access to clean and safe drinking water and maintain ideal conditions for their aquariums, working to promote the well-being of both humans and aquatic life.

    Our Aquarium & RO Membrane Products

    Looking for the correct gallons per day and level of PSI for your system? Air, Water & Ice has several options available. This includes our Filmtec Membrane 50 GPD, which fits most RO systems. The 50 GPD membrane consists of a TFC thin film composite membrane with a 99% rejection rate, which is meant to be used along with the 550 fast flush flow restrictor. We also have the Filmtec Membrane 70 GPD, which is similar, but with a much improved rejection rate at 99% at 50 PSI.

    If you're looking for an even more powerful membrane product, we also offer the Filmtec Membrane 100 GPD, which boasts an extremely HIGH rejection rate, and should be used with the 1000 fast flush flow restrictor. Lastly, we have the Axeon 150 GPD Membrane with a 98% rejection rate, high output, and superb TDS rejection. You'll need to use a 1100 fast flow restrictor with the 150 GPD membrane.

    Need a replacement? Air, Water & Ice also has two replacement Merlin membranes and filter packs for your Merlin unit, and also a 17" carbon prefilter. If you have questions or need assistance with your RO or aquarium membrane products, please don't hesitate to give Air, Water & Ice a call.

    Shop RO & Aquarium Membranes

    Founded in 1982, Air, Water & Ice is your resource for various different types of drinking water and aquarium products for better, cleaner, and faster access to water. Besides drinking water RO membranes and aquarium membranes, we are also a resource for RODI and RO systems, DI Resin products, water filters, pumps, water testing products, and more.

    Have questions? Please direct them to our team at or call us at (772) 461-0256, and our team will be in touch!