• Natural ion-exchange media — binds ammonia directly, rather than adsorbing organics generally the way carbon does.
• Useful during cycling — buys a margin of safety in a new tank before the biological filter is established.
• Useful after tap water treatment — helps mop up ammonia released when chloramine is broken down by a dechlorinator.
• Three cartridges per pack — genuine Fluval item 14015, sized for the C3 chemical media chamber.

Sized specifically for the Fluval C3 Power Filter's chemical media chamber. It does not fit the C2 or C4 — use their respective ammonia remover cartridges instead. It is a different product to Fluval's C3 Zeo-Carb (item 14018), which blends this ammonia-removing resin with carbon in one cartridge.

• Suitable for freshwater tanks — new setups being cycled, tanks recovering from a chloramine dose, or heavily stocked tanks running high ammonia readings.
• Not suitable for saltwater. The resin works by exchanging ions with ammonia, and the high mineral content of saltwater outcompetes it, so it won't remove ammonia in a marine tank.

Replace approximately once a month during regular use — Fluval's own guidance is that the resin's effectiveness fades gradually until it stops working, rather than failing all at once, so it's worth replacing on a schedule rather than waiting for a problem to show up on a test kit.

• Fluval C3 Activated Carbon (item 14012) — general odour and discolouration control alongside targeted ammonia removal.
• Fluval C3 Foam Pad (item 14006) — the mechanical stage this media sits behind.
• Fluval C3 Bio-Screen (item 14021) — the biological stage that takes over longer-term ammonia control as the tank matures.

Covered by Fluval's standard replacement-media warranty against manufacturing defects, in addition to your rights under Australian Consumer Law. Ships as a standard parcel.

Can I use this in a saltwater tank?

No. It's freshwater only — the ion-exchange resin doesn't work in the mineral-rich environment of saltwater.

How often do I need to replace it?

Roughly once a month with continuous use.

Do I need this if my tank is already cycled?

Not usually. It's most useful during cycling, after a large water change with chloramine-treated tap water, or as backup in a heavily stocked tank — an established biological filter normally handles ammonia on its own.

Will this fit my C2 or C4 filter?

No — each C-series size uses its own ammonia remover cartridge.