Ondersave Products
Eco Block Family Products
Eco Block Aqua
bio Block Rocks
Eco Bio-block Pebbles
EcoBio-Block for
Environmental Applications
Queen Fish
Clear Water - Healthy Fish!

EcoBio-Rock™
Clarifies cloudy water in aquariums.
Easy-to-use, attractive, and minimizes maintenance
EcoBio-Rock

EcoBio-Rock is a porous volcanic cement block containing nutrients and beneficial bacteria that regularly multiply to create a healthy ecosystem.

  • Quickly establishes nitrifying bacteria in newly established aquariums
  • Speeds up denitrification cycle
  • Minimizes aquarium maintenance by significantly reducing the need to change water and vacuum gravel.
  • Revitalizes, and clarifies water by naturally maintaining an eco-friendly environment.
  • Easy-to-use --- simply rinse with chlorine-free water and place in the fish tank.
  • Lasts for years --- suggested replacement of approximately 1.5 - 2 years. May last longer.
  • Can be used in both fresh water and salt water.
  • Safe for all fish and reptiles.
  • Removes odors.
  • No need to add liquid or powder bacteria.
  • Attractive decoration for your aquascape.
  • Takes approximately 2 - 4 weeks for results.
US Patented
90-day satisfaction guarantee
Use one EcoBio-Rock
per 3 to 40 gallons of water.*

Size: 3 1/2“ dia x 1 1/2“ H
Wt.: approx. 7 oz.

*Please note that extra rocks may be necessary depending on condition of water, temperature and amount of fish.

Bio Block

Available in 3 colors.
From left to right: coral, white, green

                   $43.00
            plus Shipping & Handling

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