Whisper Bio Bags Large 12 Pack 29 55 gallon tank divider Cartridge is refillable to allow

Cartridge is refillable to allow for easy customization of water treatment

or overlayered with river rock

Accelerated growth potential

Works best with aquarium population sizes between dense 90 gal to sparse 175 gal

cut tubing carefully along the attachment length to release the glassware

Whisper Bio Bags Large 12 Pack 29 55 gallon tank divider Cartridge is refillable to allowWhisper Bio Bag Cartridges complete the Whisper Power Filter package for a clean, easy to maintain aquarium. The Whisper Bio Bag multi packs come unassembled and offer economical pricing on larger quantities. Fits: Large 20, 30,40 and 60 Power Filters and 20i & 40i Internals