Aqua Medic AntiPhos Fe

Aqua Medic Anti Phos Fe is a high-efficiency iron-based phosphate and silicate remover used in aquarium filtration to reduce nutrients that cause algae growth.

Key specs

• Type: Chemical filter media (iron-based GFO)
• Material: Granulated ferric oxide (iron compound)
• Use: Freshwater & marine aquariums
• Form: Granules (used in filter bag or reactor)
• Function: Removes phosphate (PO₄) + silicate (SiO₂)
• Capacity: approx. 10 g phosphate per 1 kg media
• Duration: ~3–6 months (depending on nutrient load)

What it does

• Reduces phosphate and silicate levels in water
• Prevents and controls algae growth
• Improves water clarity and stability
• Supports reef coral health by limiting excess nutrients
• Works passively (no chemicals released back into water)

How to use

You can use Anti Phos Fe in three common ways:

1. Filter bag (simplest method)

• Rinse media with RO or aquarium water before use
• Place into a fine mesh filter bag
• Put in a high-flow filter area or sump chamber

2. Canister filter

• Place between filter sponges where water flows evenly through it
• Avoid crushing the granules

3. Media reactor (best performance)

• Use a fluidized reactor with gentle tumbling movement
• Provides maximum efficiency and lifespan

Recommended dosage

• Marine aquarium: ~50–100 ml per 100 liters of water
• Freshwater aquarium: ~25–50 ml per 100 liters of water

Important dosing rules:

• Start with 50% of recommended dose in reef tanks
• Increase slowly if phosphate is still high
• Never reduce phosphate too quickly (can stress corals)
• Replace when phosphate starts rising again or after saturation

Important notes

• Always rinse before first use (removes dust particles)
• Ensure moderate water flow (not too strong, not stagnant)
• Do not compact tightly in a filter bag
• Regularly test phosphate levels (PO₄ test kit recommended)
• Overuse can cause too-rapid nutrient drop in reef tanks

Who it’s for

• Reef tanks with algae or high phosphate issues
• Freshwater aquariums using tap water with nutrients
• Aquarists needing long-term phosphate control
• Medium to large aquarium systems

Not ideal for

• Tanks already running ultra-low nutrients (ULNS systems)
• Beginners who don’t test water parameters
• Systems without any filtration flow