ATI Replacement Sponge #2
Designed to replace the sponge in the Hydro-Sponge Filter #2 and the #2 Filter Max pre-filter, this replacement sponge ensures optimal water flow and filtration efficiency in your aquarium system.
Specifications
| Item | Details |
|---|---|
| Product Type | Replacement Sponge |
| Compatible Filters | Hydro-Sponge Filter #2, Filter Max Pre-Filter #2 |
| Material | High-density polyethylene with sponge core |
| Dimensions | 10 x 10 x 1 inch |
FAQ
Is this sponge compatible with all models of the Hydro-Sponge Filter?
This sponge is specifically designed for the Hydro-Sponge Filter #2 and the Filter Max Pre-Filter #2. It may not fit other models.
How often should I replace the sponge?
Replace the sponge every 3 to 6 months depending on tank size and fish population. Monitor filter performance and water clarity for signs of clogging.
Can I use this sponge in saltwater tanks?
Please contact customer service

Andrew MacDonald –
The sponge fits perfectly in my Hydro-Sponge Filter #2. It maintains good water flow and keeps the tank clean without clogging easily. Easy to install and lasts longer than the original one.
John Young –
Works well with my Filter Max pre-filter. The sponge holds up after several weeks of use. I noticed better water clarity after installing it.
Owen Morrison –
Great replacement for the old sponge. It’s durable and fits snugly. My filter now runs smoothly and the water flow is more consistent.