Fluval Aquaclear 20/Mini Foam Block

• Genuine fit – cut exactly to the AquaClear 20/Mini media basket.
• Mechanical filtration – physically traps floating debris and particles before they cloud the tank.
• Biological support – once established, the foam's surface also carries beneficial filter bacteria.
• Fresh and saltwater safe.

This insert is sized for the AquaClear 20 and AquaClear Mini power filters only. It will not fit the larger AquaClear 30, 50, 70 or 110 – each of those takes its own size of foam insert.

Rinse it in water taken from the aquarium, not tap water, once flow visibly drops – tap water's chlorine or chloramine kills the bacteria living on the foam. Replace it once it no longer springs back after a squeeze, typically every four to six weeks depending on how heavily stocked the tank is. Replace only one type of media at a time so the filter never loses all its bacteria at once.

How often should I replace this foam?

When it stops springing back after a squeeze or restricts flow even after rinsing – typically every four to six weeks in an established tank, more often in a heavily stocked one.

Should I rinse it in tap water?

No – use water taken from the aquarium during a water change. Tap water's chlorine or chloramine will kill the bacteria colonising the foam.

Does this fit the AquaClear 30?

No. The AquaClear 30, 50, 70 and 110 each use a larger, differently sized foam insert.

Covered by your rights under Australian Consumer Law, in addition to any manufacturer warranty against defective goods. This is a small, non-hazardous item and ships on standard freight.