Key Features

• COMPATIBLE FILTER MODELS – Compatible with Aqua-Tech 20-40 & 30-60 power filters using EZ-Change #3 cartridges. Also compatible with Marineland Penguin PRO 275/375 and Penguin 200/350 power filters using Rite-Size C cartridges. Verify the model and cartridge size before ordering.
• COTTON MEDIA & ACTIVATED CARBON – Cotton media helps capture visible aquarium debris and fish waste, while activated carbon provides an additional filtration layer for routine aquarium care.
• 12-PACK REPLACEMENT SUPPLY – Includes 12 blue aquarium filter cartridges for regular replacement. Replace every 2–4 weeks or as needed based on aquarium conditions and filter performance.
• Easy to Replace Rinse the cartridge with cool water before first use, remove the old cartridge, and slide the new one into the filter slot. Quick replacement without tools.
• CHECK THE SIZE – Compare the width, height and thickness shown in the listing with your current cartridge before purchase. Compatible replacement; not an original Aqua-Tech or Marineland part.

Specifications