EcoBio-Block EcoBio-Stone with Beneficial Aquarium Bacteria

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Simplify your aquatic water maintenance with EcoBio-Block EcoBio-Stone with Beneficial Aquarium Bacteria. Made from Japanese volcanic rock, these unique, mineral-rich porous stones contain nutrients and beneficial natural bacteria spores that only germinate when organic waste is present in the water. The bacteria help break waste down into safer nitrates to clarify and deodorize aquarium water, and also accelerates the nitrogen cycle. Safe for humans, the bacteria are 100% pure microorganisms found in nature. Calcium and trace minerals are also slowly leeched into the water from the stone to create a healthy environment that requires minimum maintenance.

Key Benefits
  • Helps reduce aquarium maintenance by keeping aquarium water crystal clear and odor free.
  • Unique, mineral-rich porous stones contain natural bacteria spores that help break waste down into safer nitrates and accelerate the nitrogen cycle.
  • Volcanic rock also leeches calcium and trace minerals into the water to create a healthy environment for fish.
  • Works equally well in both fresh and salt water environments; also recommended for reptile and amphibian habitats.
  • Small stone treats 8 to 16 gallons and medium stone treats 15 to 40 gallons; can use multiples as needed to accommodate your tank size.

See all items by EcoBio-Block

  • Item Number
  • Dimensions
    2.5 x 2.5 x 2 inches
  • Weight
    6.08 ounces
  • Aquarium Type
    Freshwater, Saltwater
  • Reptile Type
    Aquatic Turtle

To use, rinse off the stone with chlorine-free water, soak overnight and add to your tank, preferably near an air source. If you have an airstone, place it near the airstone. EcoBio-Stones are sized according to the volume of your tank. Once immersed in water, beneficial bacteria in the stone will start to propagate and disperse into the water approximately every 30 minutes. Depending on the size and condition of your tank, it will normally take from 2 to 4 weeks to see results. However, it can be as short as two days and as long as 3 months (very rare). If medication is necessary to treat sick fish, either remove the fish or the block until treatment is completed. The bacteria in EcoBio-Stones are viable at pH 3 - 11 and at temperatures of 50 degrees F to 149 degrees F. The most effective water temperatures are from 77 degrees F to 140 degrees F.

Extra blocks may be necessary depending on variations in the condition of water, temperature and amount of fish. No need to add liquid or powder bacteria.

EcoBio-Stone SizeDimensionsTreats
SMALL2.5 x 2.5 x 2 inches8 - 16 gallons
MEDIUM3.75 x 3.75 x 2.13 inches15 - 40 gallons
MEDIUM 2 PACK3.75 x 3.75 x 2.13 inches30 - 80 gallons

Customer Reviews

5 Reviews 5 Reviews 4.4 out of 5 Stars

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80% Recommend

80% of reviewersrecommend this product

4.4 / 5

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  • 5 out of 5 stars

    love this stone

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    I have been using these stones for years in different sizes of aquariums with great success! As long as I keep one of these in my tank, and replace it every couple years I never have any problems with my water quality. My fish breed happily, the water stays clear, and I have no trouble cycling a new tank with this stone. I highly recommend this to any fish keeper.

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  • 5 out of 5 stars

    Nice product

    By on

    Great look. Snails and shrimp see to always be on it.

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  • 5 out of 5 stars

    Aquarium Eco Bio Block

    By on

    Was expensive, but it is doing as promised in my aquarium, which makes my fish friends very happy...the shrimp guys love their new elevate residence too, the view is fascinating, as their block habitat is resting on top of it in their corner LOL...solved problem and should last up to two years. Whats not to like?

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  • 2 out of 5 stars

    Expensive rocks

    By on

    I bought the 2 pack and I cannot fathom why they cost as much as they do. I thought they were more like air stones. I was wrong, don't you be wrong too

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  • 5 out of 5 stars

    EcoBio stone great addition to tank

    By on

    Works great and water clearer and healthier for the fish and snails.

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