• Fits one model — sized specifically for the Small 350 hang-on filter, so it seats correctly without gaps or bypass.
• High surface area — more colonisable surface than bare plastic housing gives your nitrifying bacteria room to establish.
• Single screen — sold individually so you can restock without buying a full media set.

• Suitable for: the Bioscape Hang On Power Filter Small 350 only.
• Not suitable for: the Medium 550, Large 750 or X-Large 1000 — the larger housings take the M/L/XL screen, which is a different size.

Rinse the screen in water taken from your own tank during a water change, rather than tap water, to avoid killing the bacteria colony. When it's physically worn out and due for replacement, run the old and new screens together for around two weeks so bacteria have time to establish on the new one before the old one is retired.

Covered against manufacturing defects on arrival, in addition to your rights under Australian Consumer Law. Ships as a standard parcel item.

Will this fit my Medium or Large Bioscape filter?

No. This screen is sized for the Small 350 only. The Medium 550, Large 750 and X-Large 1000 all take the larger M/L/XL bio screen instead.

How do I know when to replace it?

Bioscape doesn't publish a fixed interval. Replace it once it's visibly breaking down or crumbling rather than to a calendar, and rinse rather than replace it at every water change.

Do I need to cycle a new screen before using it?

Run it alongside your old screen for about two weeks first, so the bacteria colony transfers across before you remove the old one.