Xport-NO3 Biological Filtration Dimpled Brick - Brightwell

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Xport-NO3 Biological Filtration Dimpled Brick - Brightwell

21% Recommend this to a friend (3 of 14)

SKU: 210317

reg. $38.99

Special Price: $33.14

In Stock: 85
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Quick Overview

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.


Full Details

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.


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  • Worst product I’ve ever bought By Todd on 11/5/2017

    This product turns to mud after a few months (literally). It does not stay together as a brick. When I tried to remove the remains it contaminated the water and had to vacuum and change out the water in the sump.... btw this is the first time i felt compelled to submit a negative review of any product in my life.
  • Melts and falls apart By David on 9/28/2017

    Purchased one from my LFS 3 months ago. Followed directions for the placement of the brick. Placed in a low flow area of sump. NO3 dropped the first week, AWESOME! 3 months later I have a rectangular shaped blob of sandy muck (the NO3 brick) and an extremely messy chamber of the sump where I put the block.

    Talking with the LFS and reading other peoples postings, this is a common issue now (wasn't when I purchased the block 3 months ago).
  • no issues By mark on 9/12/2017

    I havent had any crumbling issues with this product. It is easy to damage , i keep it out of the way in my sump so it doesnt get rubbed / hit. I feed pretty heavy and my nitrates are < 5. I dont dose any carbon. I have had this from start of my tank, so I cant say for sure if it responsible for nitrate reduction.
  • The easiest way to reduce nitrates By emmbec on 8/24/2017

    I've had this product for almost a year now so I can say with confidence that this product does work well. I've had no issues like others have said that it crumbles appart, I heared there was a bad batch but they are being replaced so I think I got the good one. I would highly recommend them to anyone wanting to reduce their nitrates in a natural and easy to use way.
  • Fell Apart By Big O on 8/17/2017

    I contacted Kent and he is willing to replace the brick, which is very good of him standing behind his products. It does work in reducing nitrates but fell apart and created a mess. I will give another go
  • Falls apart in a gently current By Luke on 6/7/2017

    Bought thinking it was a cheaper route then buying marine pure and fell a part in my sump just from the water circulating. now i have sand debris in the bottom of my sump.
  • Fell Apart By Mike on 4/22/2017

    I bought the Brightwell Brick thinking it was a cheaper alternative to marine pure. However. I have had it for 3 months without moving it in my sump. It is in a low flow zone with the rest of my live rock rubble. I just cleaned out the sump and realized there was a ton of sand. I picked up the brick and it fell apart in my hand. I am very dissatisfied with my purchase. I would not buy this product.
  • Bad Product - don't bother By Matthew on 4/16/2017

    This brick is dainty and easy to crumble when it first comes out of the box - I wasn't impressed, but continued to put it in a low-flow area of my sump. That was my mistake - within a few weeks it has the consistency of a sand castle at high tide. I just spent 45 minutes trying to get the leftovers out of my sump. Don't make the same mistake and think it's going to work - it won't. Do not buy - holy crap, do not buy.
  • Brick breaks down By Buku on 4/15/2017

    As others have stated, it just falls apart. I have it in a low flow area and it looked mostly intact. I decided to check it and when I touched it, the whole brick fell apart.
  • Try again By Mark on 4/13/2017

    As per the other reviews, this brick also fell apart in my sump within 4 weeks of use, just started to crumble to pieces...do not recommend
  • Crappy Product By Etienne on 3/19/2017

    Trying another product may be your best option. After about two months, this product fell apart in my sump area. I decided to give Seachem Matrix a try instead
  • faulty product By BONK TIME on 3/6/2017

    The brick fell apart from the center out. I took it out after 3 three weeks and about 40% had littered the bottom of my sump with silt and what was left was soft, like wet tissue paper................


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Product Questions

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 5:23:00 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 (Admin) on Jan 29, 2017 7:12:00 PM