Nano-Tech Bio-Blocks (2 pcs)

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Replace 20lbs of Live Rock with just 1 Bio-Block!

  • Completely inert-- wont affect water chemistry
  • Stabilized microbial sewage treatment technology
  • Ultra-high surface area for enhanced filtration
  • Just 1 Bio-Block piece can replace up to 20lbs of live rock
  • Rapidly colonized by beneficial bacteria
  • Stable ceramic base that will not decompose over time
  • For freshwater and marine aquariums


Maxspect's Nano-Tech Bio-Block are created using stabilized microbial sewage treatment technology with Biological Aerated Filter (W-BAF). This proprietary technology is formed into inert ceramic blocks which can be placed directly into your sump or filter compartment for aquarium filtration. Each block has an ultra-high surface area of 11,635 square feet, providing ample room for colonization by beneficial bacteria strains that can work to lower nitrites, nitrates, and ammonia naturally.



Block Dimensions - 4" x 4" x 1"

Package Contents - 2 Bio-Block pieces

Surface Area per Block - 1,080 m2 / 11,635 ft2

Total Surface Area per Package - 2,160 m2 / 23,270 ft2

Treats - 2,850 L / 750 Gallons 

More Information
UPC 6954636300871
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Product Questions

Do you need to clean the blocks and how if so?
How often would you replace them? I have a 60 gallon and a 25 gallon tank.

Sounds like one block is good for my 60 gallon. What do you suggest?
Question by: Anita Craig on Nov 25, 2023, 12:31 PM
Hi there, thanks for the question! You can clean them about every 6 months. You will want to rinse it with clean salt water to get any debris off and place it back in. And one block should be alright with a 60 gallon, but you can always add another if need be!
Answer by: Grace (BRS Staff) on Jan 26, 2024, 10:37 AM