Orca Nitra-Guard Titanium Bio Cubes

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Nitra-Guard Titanium BIO-Cubes 250ml- 1000mL (for aquariums 80-250 gallons)

  • The world’s fastest & most effective carbohydrate based nitrate remover
  • More economical & effective than any other product of it’s kind in the world…nothing can compare!
  • Reduces 50ppm Nitrate to 0ppm within 1 to 2 weeks in Freshwater and Seawater
  • Easy & convenient use, no daily feedings or dosings, just add as directed and enjoy 4 to 6 months Nitrate free water
  • No more Deep Sand Bed Filters required which saves space, time and money
  • 100% natural, biological Nitrate removal, no chemicals or metals like iron or aluminium
  • No effect on pH or alkalinity
  • MASSIVELY Reduces Water Changes



If you system has traces of phosphates please use Nitra-Guard standard.

BIO-Cubes are made from 100% biologically degradable polymers that effectively remove both nitrates and phosphates from both marine and freshwater systems. BIO-Cubes have a very high surface area and contains 400% more carbohydrates than any other brand, making it the best product of its kind in the world. Independent testing in real world scenarios, have proven BIO-Cubes to far outperform all other competing products. No other product of its kind can compare with the explosive performance that BIO-Cubes can offer. BIO-Cubes are very versatile and can be used in filter bags, fluidized reactors and denitrators. BIO-Cubes require no maintenance and require no feeding dosages making it the easiest and most convenient nitrate and phosphate removing product on the market. Nitra-Guard BIO-Cubes comes with a free filter bag with every jar (excluding 5000ml size).

How it all works
Bacteria consume the high carbohydrate source found in the BIO-Cubes and form a biomass that absorbs nitrates and phosphates from the water in the aquarium. This biomass is then skimmed out with a protein skimmer or is consumed as a food source by corals and clams.

When culturing bacteria, 2 of the most important factors that will determine the size of the colony are surface area and food source. BIO-Cubes look like small open celled sponges giving the product a massive surface area. BIO-Cubes also has 400% more biologically available, insoluble polymer carbohydrates than any other product in the world. These 2 factors create conditions that are perfect for culturing and sustaining large bacteria colonies required to effectively remove phosphate and nitrate from aquariums. It is these 2 factors that have made Nitra-Guard BIO-Cubes the world’s best carbohydrate based nitrate removing media. Independent tests that were performed in real world scenarios revealed that BIO-Cubes had the ability to reduce nitrates from 60ppm down to 5ppm in under 2 weeks while competing products claim to only start working after 2 weeks!

Directions for use
The amount required will depend on stocking densities and amount of food added to the aquarium. For heavily stocked tanks, use 3ml to every 1liter of aquarium water and for aquariums with lighter stock loads, add 1ml to every 1liter of aquarium water.

The Nitra-Guard BIO-Cubes work best in an oxygen-rich environment with good waterflow. To get the best results, the “Bomb Method” as described in the instructions can be used. The BIO-Cubes can also be used in a media reactor or a filter media bag and placed near the protein skimmer to assist in removing the nitrate/phosphate-rich biomass faster. If using the Nitra-Guard BIO-Cubes in a reactor, make sure the reactor can be fitted with a venturi to provide sufficient oxygenation to the BIO-Cubes. After 1 to 2 weeks, the bacteria colonies will become prolific enough to start lowering nitrate levels in your aquarium. If nitrate and phosphate levels in your aquarium are high, some cloudiness may occur which clears in a few days. Soak BIO-Cubes in freshwater for 24hrs before use.

Available sizes: 250ml / 500ml / 1,000ml / 5,000ml

Additional information


250ml, 500ml, 1000ml

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