Ista Filter Inlet Sponge
Ista’s Hang-On Filter Inlet Sponges attach to the intake of hang-on back filters or even canister filters. This pre-filter sponge provides an area for beneficial bacteria to gather and acts as the first line of defence against waste and other contaminants. It also prevents baby fish and small invertebrates from being sucked into the filter. Invertebrates even enjoy grazing on the sponge itself!
Easy to maintain, simply wash and reuse the sponge or replace it as needed. Make the most of your filter by adding a pre-filter sponge to your filtration system!
| Feature | Description |
|---|---|
| Filter Type | Hang-on back filter or canister filter |
| Function | Pre-filter for waste and contaminants; supports beneficial bacteria |
| Usage | Attach to intake; wash and reuse or replace as needed |
| Benefit | Protects small fish and invertebrates; provides grazing area for invertebrates |
FAQ
Can this sponge be used with both hang-on back and canister filters?
Yes, the Ista Filter Inlet Sponge is compatible with both hang-on back filters and canister filters.
How often should I clean or replace the sponge?
Wash the sponge regularly, ideally every 2 to 4 weeks, depending on tank conditions. Replace it if it becomes heavily clogged or damaged.
Does the sponge support beneficial bacteria?
Yes, the sponge provides a surface for beneficial bacteria to colonize and thrive.


Rachel Knox –
The sponge fits perfectly on my hang-on filter and has made a noticeable difference in water clarity. My shrimp are now active on the sponge and the tank feels cleaner overall. Easy to clean and lasts longer than the previous filter pad.
Anne Simpson –
Works well as a pre-filter. I noticed less debris in the main filter after installing it. The sponge holds up well during regular cleaning and doesn’t fall apart easily.
Jason Allan –
Great for small fish and invertebrates. It keeps them safe from being sucked into the filter and provides a natural grazing area. I’ve seen my snails actively feeding on it.