EcoBio-Stone™ M

EcoBio-Stone M makes cloudy fish tanks clear and healthy.

Keep cloudy fish tanks clear with EcoBio-Block's special beneficial bacteria which multiply when immersed in water. Makes aquarium care simple.

Use one EcoBio-Stone M for 15 to 40 gallons of water.*

EcoBio-Stone M (coral)




EcoBio-Stone M for mid-size aquariums is a volcanic rock and cement block containing nutrients and beneficial bacteria that regularly multiply to create a healthy ecosystem.


  • Minimizes aquarium maintenance by significantly reducing the need to change water and vacuum gravel.
  • Quickly establishes nitrifying bacteria in new aquariums reducing length of "new tank syndrome".
  • Speeds up nitrogen cycle
  • Revitalizes, and clarifies water by quickly breaking down organic waste into safer by-products.
  • Easy-to-use --- simply rinse with chlorine-free water, soak overnight, and place in the fish tank.
  • Lasts for years --- suggested replacement of approximately 1.5 - 2 years. May last longer.
  • Effective for both fresh and salt water fish tanks.
  • Safe for all fish, shrimp, frogs, turtles etc.
  • Removes odors
  • No need to add liquid or powder bacteria.
  • Takes approximately 2 - 6 weeks for results under normal conditions.

US Patented
120-day satisfaction guarantee

Additional Info

  • Size:

    approx. 3 3/4“ dia x 2 1/8“ H

  • Capacity: 15 to 40 gallons of water.*
  • Note:

    Extra blocks may be necessary depending on variations in the condition of water, temperature and amount of fish.

  • Weight: approx. 16 oz.


More in this category: EcoBio-Stone™ M 2-Pack »
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