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


"Just thought I'd tell you
what a wonderful product you have. I purchased the pebbles for a twenty gallon tank,
within 3 weeks I could see the water clearing nicely and the
fish seem to be perking up and water tests are all leveling off nicely and thats only 4 weeks. Very impressive...maybe when sales start to go through the roof you could lower the prices a little.....fixed income hobbiest"

George from Colorado

Click here for more testimonials

EcoBio-Block interview on
Pet Fish Talk radio show.

Click here to listen 13 minutes radio interview

Clarify Cloudy Aquarium Water and Reduce Water Changes 
with EcoBio-Block (EBB) Family Products.
EcoBio-Block's unique formula contains beneficial bacteria that keep water clear and odor-free, and create a healthy environment for fish.
EcoBio-Block Family (EcoBio-Block, EcoBio-Rock, and EcoBio-Pebbles) is made of a paste mixture containing mineral-rich, porous volcanic stones, special cement, nutrients, and beneficial bacteria (bacillus subtilis natto - the same type of bacteria found in the Japanese delicacy "natto") sealed in a live and propagable state.

When EBB bacteria come in contact with water, they immediately propagate, releasing millions of EBB bacteria that multiply every half hour. The beneficial bacteria then degrade organic matter, this deodorizes and clarifies cloudy water. EcoBio-Block is unique because the bacteria live in the block, making it unnecessary to add new bacteria for years.

EcoBio-Block Family rapidly degrades dangerous ammonia first into nitrite and then into safer nitrates. Nitrates are naturally eliminated by plant absorption, as well as by microbes living in gravel which convert nitrates into nitrogen gas which then evaporates from the tank.

EcoBio-Block's volcanic stones leach necessary calcium and trace minerals into the water to create a healthy environment for aquatic life.

With EcoBio-Block Family, fish can live in the clear water for years.

EcoBio-Block contains beneficial bacteria which propagate every 30 minutes, naturally clarifying and deodorizing
cloudy water.
EcoBio-Block's Nitrification Process
Beneficial bacteria in EcoBio-Block multiply and disperse into surrounding waters. The beneficial bacteria effectively decomposes organic matter and maintain the nitrogen cycle for years.


Characteristics of EBB Bacteria


  • Can be used in both fresh and salt-water
  • Safe for all fish
  • Viable pH level: pH 3 – pH 11 (viable from strong acid to strong alkaline condition)
  • Effective propagable water temperature: 50 – 149°F (the most active temprature is from 77°F to 140°F
  • Valiable in air and water
  • Removes odors
Safe to use

  • EBB bacteria are grass bacillus subtilis natto. They are safe microorganisms with a determined DNA sequence.
  • The safety and innocuity of EBB bacteria have been certified according to international criteria.
cloudy aquarium water and clear water with EcoBio-Rock
  with EcoBio-Rock                  without EcoBio-Rock
Water Quality Test

Water quality was tested in two identical aquariums, one with and one without EcoBio-Rock.
Both contained 20 freshwater fish.
Aquarium with EcoBio-Rock showed significant water quality improvement.
Picture was taken after 134 days.


Our In-House Test

Every month, since November 27th, 2006, a photo is being taken of our home aquarium. As you can see, the aquarium water remains clear and fish are healthy.

EcoBio-Ring monthly test
    November 27th, 2006             January 5th, 2008                  July 28th, 2008

Fish Species: Longear Sunfish, Orange-spotted sunfish and Pumpkin Seed - 12 fish in 20 gal. tank, ranging in size from 4" to 7". We started the tank with three plants, but the fish gradually nibbled them away, so we took the stumps out. We put background paper behind the glass for aesthetics. Last month we decided to add back a few plants for aesthetics (and for nibbling!)