ATI Replacement Pro Sponge #3
This sponge is designed to replace the filter sponge in your ATI Hydro Sponge Pro #3 filter. It provides optimal filtration while maintaining a balanced flow for your aquarium.
Product Specifications
| Feature | Detail |
|---|---|
| Material | High-density polyethylene |
| Size | 3 inches in diameter |
| Compatibility | ATI Hydro Sponge Pro #3 Filter |
| Filter Type | Hydro Sponge Pro #3 |
FAQ
Is this sponge compatible with other ATI filter models?
No, this sponge is specifically designed for the ATI Hydro Sponge Pro #3 filter only.
How often should I replace the sponge?
It is recommended to replace the sponge every 3 to 4 months, or sooner if it shows signs of wear or clogging.
Can I use this sponge with a saltwater aquarium?
Please contact customer service for saltwater compatibility details.

Connor Murray –
The replacement sponge fits perfectly into my ATI Hydro Sponge Pro #3. It maintains good water flow and doesn’t clog easily. I’ve used it for two months and it’s still performing well.
Felicity Wilson –
Easy to install and fits snugly. The sponge holds up well under regular use. I noticed better water clarity after switching to this replacement.
Madeleine Butler –
Excellent fit and quality. No leaks or gaps after installation. Works smoothly with my filter system and keeps the tank clean.