Marineland 2 in 1 Bio Foam Prefilter screens out dirt and debris while supporting the growth of beneficial bacteria. Crystal-clear water is the mark of a healthy, thriving aquarium, this filter foam will boost mechanical and biological filtration for premium water clarity. Easy maintenance, just rinse monthly or as needed.

• Screens our dirt and debris
• Supports beneficial bacteria
• Easy maintenance

  Compatible with the Penguin Pro 125, 175 & 275 filters