Zoo Med's Coarse Pre-Filter Sponge is the first line of defense in removing dirt and floating debris from your terrarium or turtle habitat. Although filters are used to keep your water clean and safe, Zoo Med also recommends weekly water changes of at least 20%. When adding tap water (during a water change) make sure you add Zoo Med's ReptiSafe to remove chlorine and chloramines.

• Removes dirt and floating debris from your terrarium or aquarium.
• Improves water clarity.
• Easy to clean/reusable