Product Features:

JBJ 6 gallon Replacement Sponge

This is the replacement Sponge Filter Media for the JBJ Nano Cube. The sponge design provides mechanical filtering of solid waste matter from your aquarium water. Prevents premature clogging of other filter media in the filter path. Sponge Filter Media should be replaced every 2 months. Alternate the replacement of Sponge Media with Activated Carbon Media to maintain biological filtration. Designed for the Nano Cube aquarium filter and other filters requiring a sponge block.

• 3" x 3" x 4" Sponge Block Filter Media
• Provides Excellent Mechanical Filtration
• Replacement for Nano Cube Filter and Other Filters