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Reef Pro’s Aluminum Oxide pellets are the ultimate form of phosphate and silicate absorption. These pellets are known to last up to 3 times longer than standard GFO.


If phosphates are 0.08ppm or higher, it is recommended to use Reef Pro’s GFO to bring phosphates down more effectively and quicker


Directions: Use ½ cup per 40 gallons of aquarium water. For maximum effectiveness measure out the amount of pellets needed for your system and place them in a reactor or in a mesh media bag. Rinse out media in RO/DI water or saltwater before use to remove all the fine particles and dust. Place media bag in a high flow area. If in a reactor, set flow through the reactor as high as possible without the media tumbling. Once phosphates are in the desired range, 0.02ppm-0.04ppm it is recommended to test once a week for phosphates. Once phosphates begin to rise, the media should be replaced.


Reef Pro’s GFO is great for removing phosphates quickly. It is greatly recommended to use Reef Pro’s Aluminum Oxide for maintaining Phosphate levels low for a longer period of time.

8 OZ treats up to 75 gallons

24 OZ treats up to 225 gallons.

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