Brightwell Aquatics

Xport-NO3 Biological Filtration Dimpled Brick

In stock
Out of stock

- +

Dimpled Brick Dimensions - 9.0" x 4.5" x 2.625"

Why Dimples?

The dimples allow for water flow to pass through when a single brick is placed on the bottom of a sump, or when multiple bricks are stacked one on top of another.

Xport-NO3 is great for tanks that have minimal aquascape, or are heavily stocked. The biomedia plates can be put just about anywhere within the system to allow more surface area for biological filtration, resulting is faster conversion of nitrates. Denitrifying bacteria will colonize on surfaces within the aquarium, and by adding more surface area will give the bacteria more space to flourish resulting in lower overall nitrates in the aquarium

Brightwell utilizes NanoIntelex technology creating a highly superior biomedia that has vast amounts of surface area that will allow beneficial nitrifying bacteria to colonize. Xport-NO3 works with all types of saltwater aquariums and can be employed in just about any fashion that doesn't tumble the cubes.


Xport-NO3 is a superior biomedia that utilizes NanoIntelex technology allowing Brightwell to create one of the best, most adaptable denitrifying biomedia cubes on the market today. Made specifically to allow beneficial denitrifying bacteria to colonize within the vast amounts of surface area within the cubes internal pore structure.

  • Utilizes NanoIntelex Technology to create an enhanced, "ultra-activated" material  with the capacity to outperform conventional denitrification media by over 300%
  • Open structure and high surface area results in superior flow-through characteristics and filtration efficiency.
  • Higher efficiency relative to conventional media results in smaller space requirements to achieve equivalent denitrification.
  • May be employed to rapidly decrease nitrate in even the most heavily-stocked systems.
  • Eliminates the need to perform water changes that are carried out for the express purpose of decreasing nitrate in an aquarium system.
  • May be used in conjunction with Xport-BIO and Xport-PO4


Instructions and Guidelines

Read all instructions before use. The use of a mechanical pre-filter to remove particulate organic material from water prior to its interaction with this media will improve efficiency. Rinse Xport-NO3 in purified water or low-TDS fresh water, then place media into a clean pail and fill with water from the aquarium into which the media is to be placed. Seed each 150 g of Xport-NO3 used with 20-ml of MicroBacter7 (poured into the pail and dispersed by hand), then allow media to remain in this "bath" for 24-hours at room temperature. Remove Xport-NO3 from pail and pour water into the aquarium system, then place Xport-NO3 into canister filter, media reactor, or 800µm mesh filter bag; a flow-through rate of 1 - 3x the total aquarium volume per hour is recommended. Do not fluidize. In systems with an initial [NO3] of <40 ppm, begin with a ratio of 150 g Xport-NO3 per 120 US-gallons (454 L) in system (increase this mass by 10% for every 10 ppm NO3 in excess of 40 ppm). Denitrification will typically begin within one week; rate of denitrification increases with time. If corals or other invertebrates appear to react negatively to the use of Xport-NO3, it may be an indication that NO3 is being removed too aggressively; decrease amount of Xport-NO3 used by 50% and continue use until [NO3] falls within desired range.


Note that the required amount of Xport-NO3 will change as the system matures, and as biomass and/or stocking density changes. Denitrification relies on adequate organic carbon availability; if [NO3] stops decreasing during the first month of use and no significant increase in bioload, stocking density, or nutrient input rate has occurred during this period, then it is likely that organic carbon or phosphate is limiting. Use of Katalyst, Reef BioFuel, or FlorinAxis (planted aquaria) per the instructions on the respective labels will be required to provide this carbon; NeoPhos or Florin-P will provide phosphorus. Replace ~25% of the total Xport-NO3 employed every 3 - 4 months in high-bioload systems, and every 6 - 8 months in low-nutrient systems. Maximum rate of denitrification is achieved by placing Xport-NO3 in-line with, and downstream from, Xport-BIO. Xport-PO4 may be used downstream from Xport-NO3 to facilitate complete phosphate uptake; do not place Xport-PO4 upstream from Xport-NO3, which will inhibit denitrification.

More Information
UPC 810086017652
Write Your Own Review
You're reviewing:Xport-NO3 Biological Filtration Dimpled Brick
Your Rating
Only registered users can write reviews. Please or

Product Questions

Please explain the difference between Brightwell’s 3 Xport Bricks: BIO, NO3, and PO4. From the descriptions they seem to be identical.
Question by: Carl on Nov 25, 2017, 7:52 AM
The Brightwell Bricks are made of a ceramic media that has a network of pores and will help increase your tanks available surface area for bacteria to grow on. The BIO block is just the ceramic material, where the PO4 block is impregnated with iron oxide to help bind up phosphates to it, and the NO3 blocks have sulfur in them to help decrease nitrates.
Answer by: Charlie on Nov 25, 2017, 7:55 AM
Hi, I do have MarinePure Ceramic Biomedia 1 1/2” Spheres placed between the baffles in the sump, so where shall i place Xport-NO3 Biological Filtration Dimpled Brick - Brightwell, before or after the marinepure?

Question by: Ghassan Ayyad on Jan 26, 2017, 5:23 PM
Great question! According to the Brightwell instructions, this block should come after or downstream to the ceramic biomedia. Since the Marine Pure is nearly the same as the Brightwell Xport-BIO, you can follow those same instructions. :-)
Answer by: Randy on Jan 29, 2017, 7:12 PM