Nyos Phosi EX

What It Is

Nyos Phosi-Ex is an iron-based phosphate remover designed to reduce phosphate and silicate levels in marine aquariums. Suitable for use in media reactors or filter media bags, it helps maintain low nutrient levels and supports long-term reef stability.

Why We Like It

Not all phosphate removers are created equal. Phosi-Ex is based on granular ferric oxide (GFO), making it a dependable choice for reefkeepers looking to reduce phosphate without the concerns that some hobbyists have around aluminium-based media.

It's particularly useful when phosphate has started to climb, nuisance algae is becoming an issue, or a system simply needs help maintaining nutrient levels within the desired range. Used sensibly, phosphate media can be an effective tool alongside good husbandry, regular maintenance and appropriate feeding.

Key Details

• Iron-based phosphate and silicate remover
• Suitable for marine and reef aquariums
• Helps reduce phosphate levels
• Also removes silicates from the water
• Useful for controlling nuisance algae
• Does not release aluminium
• No significant impact on pH
• Suitable for use in reactors or media bags