Continuum Aquatics Bact Rox Nitrazex – Small Porous Filtration Media to Remove Nitrates, Nitrite, and Ammonia in Reefs, Marine Saltwater and Freshwater Aquariums, 250-ml

Price: $8.22
(as of Feb 19, 2026 18:20:41 UTC – Details)

Bact Rox is an extremely porous filtration medium designed to be used in all ponds aquariums and aquatic systems for bio-filtration. Each liter of Bact Rox provides over 7,500 square feet of surface area internally for colonization, providing for nitrification and vast amounts of anaerobic or anoxic surface area to foster denitrification. Bact Rox will reduce the levels of toxic ammonia, nitrites and nitrates, as well as phosphates and organic pollutants in all aquaria. It may be used as your primary or only biological filtration medium. It works extremely well in nano aquariums, as well as systems of all sizes. It is particularly well suited to reef systems with live rock including FOWLR systems and will not foster problems that bio balls may. Use in a canister filter, reactor, or other type of aquarium filter with good water flow. Works well submerged or in a drip system. For maximum results, should be used simultaneously with Reef BioPellet Fuel or Reef Micro Fuel, or Flora Viv Prolifera carbon sources and/or with BacterClean M or F, BacterGen M or F, or BacterGen MD cultures, as appropriate, to jump start and maintain the colonization process at elevated levels.
Product Dimensions ‏ : ‎ 2.8 x 2.38 x 2.8 inches; 6.4 ounces
Item model number ‏ : ‎ QBROX-Nitr250
Date First Available ‏ : ‎ May 14, 2016
Manufacturer ‏ : ‎ Continuum Aquatics
ASIN ‏ : ‎ B01FO5HBRK
Best Sellers Rank: #60,166 in Pet Supplies (See Top 100 in Pet Supplies) #592 in Aquarium Water Treatments
Customer Reviews: 4.2 4.2 out of 5 stars (105) var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });

Bact-rox nitrazex is an extremely porous filtration Medium designed to be used in all aquariums and aquatic systems for bio-filtration and particularly for nitrate removal.
Each liter of Bact Rox provides 7,500 square feet of surface area for bio colonization
Bact-rox will reduce the levels of toxic ammonia, nitrites and nitrates, as well as phosphates and organic pollutants in all aquaria.
It may be used as your primary or only bacterial filtration Medium. It works extremely well in nano aquariums, as well as systems of all sizes. It is particularly well suited to reef systems with live rock including fowlr systems and will not FOSTER problems that Bio balls may.
Use in a canister Filter, reactor, or other type of aquarium Filter with good water flow. Works well submerged or in a drip system.