Aqua One (420s) Blue Foam Sponge for AquaReef 300 / 400 aquarium

Genuine and Original Aqua One 420s Blue Sponge Pad for use with AquaReef 300 and AquaReef 400 aquarium models.

◾ Genuine Aqua One Part
◾ Rinse in aquarium water
◾ Replace every 16 weeks
◾ Works in AquaReef 300 and AquaReef 400

Replacing an Aqua One 300 / 400 Blue Sponge

The 420s Blue Sponge is an essential part of your aquarium set up and if you're serious about water quality in your AquaReef aquarium, then the Aqua one 420s Blue Sponge is a must. It works in two ways: by trapping the larger particles of fish waste and aquarium debris and secondly providing a home upon which beneficial bacteria can grow. Generally it's best to replace the the 420s Blue Sponge Foam with a new one every 16 weeks.