Bulk Reef Supply GFO is a high-purity granular ferric oxide media designed to remove phosphate from reef and marine aquariums. When phosphate levels stay under control, corals showcase brighter colors, growth remains predictable, and nuisance algae is kept in check. This Bulk Reef Supply GFO delivers consistent performance for reliable phosphate management in your reef system. What is GFO? GFO stands for granular ferric oxide, a porous media that binds phosphate from aquarium water as it passes through a reactor or filter bag. The result is lower phosphate levels, supporting stability and overall health across SPS, LPS, and mixed reef systems. Key benefits Effective phosphate removal to support coral growth, color, and tank clarity Suitable for use in GFO reactors, media reactors, or filter bags Bulk supply offers cost-effective, long-lasting performance Low-dust formulation helps keep your sump and equipment cleaner Compatible with standard reef maintenance routines and compatible tank setups How to use Rinse GFO briefly before loading into a reactor or filter bag to reduce dust Place the media in a GFO reactor or in a bag inside your sump or overflow chamber Maintain adequate water flow through the media to maximize phosphate removal Monitor phosphate levels regularly and replace the media when performance declines or as needed for your tank Specifications and compatibility Designed for marine and reef aquariums requiring phosphate control, Bulk Reef Supply GFO performs well with most standard reef filtration systems and reactors. It supports mixed, SPS-dominated, or LPS-dominated tanks depending on your target phosphate level and maintenance schedule.
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