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Nitrate Remover

Filter Media: Aquarium Nitrate Remover

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Media Bags
Nitrate Test Kits


The best way to get rid of nitrate is through frequent water changes (easily done with a gravel vac). In freshwater aquariums live plants will help. In saltwater aquariums protein skimmers and refugiums will help. However, nitrate often persists and nitrate levels as low as 5 ppm can cause algae blooms. Nitrate can also cause stress to fish and invertebrates, and lead to diseases and reproductive failures.

If nitrate persists, the aquarium nitrate removers on this page will help to keep your nitrate levels manageable.
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Brightwell Aquatics NitratR Nitrate Adsorption Resin 250 ml
Brightwell Aquatics NitratR Nitrate Adsorption Resin, 250 ml
Our Price: $19.60
In Stock

  • Next-generation regenerable nitrate adsorption resin effective in marine and freshwater aquaria; does not require soaking in buffered water prior to initial use
  • Highly-selective for nitrate
  • Will not negatively impact water quality, nor release nitrate once exhausted
  • Synthetic polymer resin beads provide for durability and excellent flow characteristics; may be employed in fluidized-bed, canister, or passive filtration
  • Regenerable over 250 times, dramatically increasing cost effectiveness
  • Will not impact alkalinity in aquaria as some competing products may
Brightwell Aquatics NitratR Nitrate Adsorption Resin 500 ml
Brightwell Aquatics NitratR Nitrate Adsorption Resin, 500 ml
Our Price: $33.50
In Stock

  • Next-generation regenerable nitrate adsorption resin effective in marine and freshwater aquaria; does not require soaking in buffered water prior to initial use
  • Highly-selective for nitrate
  • Will not negatively impact water quality, nor release nitrate once exhausted
  • Synthetic polymer resin beads provide for durability and excellent flow characteristics; may be employed in fluidized-bed, canister, or passive filtration
  • Regenerable over 250 times, dramatically increasing cost effectiveness
  • Will not impact alkalinity in aquaria as some competing products may
Kent Marine Nitrate Sponge
Kent Marine Nitrate Sponge, 3.3 lbs
Our Price: $9.95
In Stock

Kent Marine Nitrate Sponge, 3.3 lbs, is a granular zeolitic medium that directly adsorbs ammonia in freshwater and fosters anaerobic bacteria growth to reduce nitrate levels in both marine and freshwater aquariums.

Use 1 cup for each 20 gallons of aquarium water. More can be used for greater effectiveness. Rinse with fresh water before use (preferably reverse osmosis or de-ionized water). Place in a large mesh bag (800 micron) or a canister filter, directly in water flow. Make sure water flows through the material and not just around it. To control ammonia in freshwater systems, granules can be replaced weekly. When used for controlling nitrates, replace only half of the granules every 3 to 6 months. 1.15 lbs (1 qt) treats 50 gallons (half of this container) and will reduce nitrates by about 20 ppm. Several weeks will be required to see an appreciable drop in nitrates. Test nitrates and ammonia regularly.
Reef Octopus BioSpheres 1000 ml Bag
Reef Octopus BioSpheres, 1000 ml Bag
Our Price: $55.99
In Stock

Reef Octopus BioSpheres naturally reduce nitrates and phosphates in an aquarium. Bio-Spheres biopellet media is a 100% pure biologically degradable polymer solid carbon source that helps reduce nitrates and phosphates within a marine environment by encouraging the growth of beneficial bacteria and enzymes on the media’s surface. Bio-Spheres provides a food source required for beneficial bacteria to reproduce and metabolize nitrates and phosphates.

It's recommended to use this media in a Bio Pellets Reactor that is designed for Bio Pellet media, such as the Reef Octopus Bio-Pellets Reactors. Use approximately 100 – 150 ml of Bio-Spheres per 25 gallons of system volume or what is suggested for your reactor of choice.
  • 1000 ml Bag
  • 100% natural polyhydroxyalkanoates (PHA)
  • Round shape
  • Reduces nitrates & phosphates
  • No harmful chemical additives or binders
  • Self regulating media
  • Helps establish low nutrient systems
  • Increases protein skimmer efficiency
Reef Octopus BioSpheres 500 ml Bag
Reef Octopus BioSpheres, 500 ml Bag
Our Price: $29.99
In Stock

Reef Octopus BioSpheres naturally reduce nitrates and phosphates in an aquarium. Bio-Spheres biopellet media is a 100% pure biologically degradable polymer solid carbon source that helps reduce nitrates and phosphates within a marine environment by encouraging the growth of beneficial bacteria and enzymes on the media’s surface. Bio-Spheres provides a food source required for beneficial bacteria to reproduce and metabolize nitrates and phosphates.

It's recommended to use this media in a Bio Pellets Reactor that is designed for Bio Pellet media, such as the Reef Octopus Bio-Pellets Reactors. Use approximately 100 – 150 ml of Bio-Spheres per 25 gallons of system volume or what is suggested for your reactor of choice.
  • 500 ml Bag
  • 100% natural polyhydroxyalkanoates (PHA)
  • Round shape
  • Reduces nitrates & phosphates
  • No harmful chemical additives or binders
  • Self regulating media
  • Helps establish low nutrient systems
  • Increases protein skimmer efficiency
Seachem De-nitrate 1 liter
Seachem De-nitrate, 1 liter
Our Price: $9.99
In Stock

Seachem De-nitrate removes nitrates, nitrites, ammonia, and organics from both fresh and marine water. The high porosity of De-nitrate supports the proliferation of both aerobic and anaerobic bacteria that further remove these toxic aquarium byproducts. Even when exhausted as an organic adsorbent, de-nitrate continues to be an excellent support for the biological filter and does not have to be removed.

  • For nitrate removal in freshwater & saltwater aquariums
  • This De-nitrate 1 liter container treats 100 gallons. As long as nitrate concentrations remain under control, the product is not exhausted.
  • De-nitrate should be placed in a place with a flow of water, such as in a canister filter, chemical filtration module or box filter
  • De-Nitrate Article (Seachem Web site)
Seachem De-nitrate 500 ml
Seachem De-nitrate, 500 ml
Our Price: $5.54
In Stock

Seachem De-nitrate removes nitrates, nitrites, ammonia, and organics from both fresh and marine water. The high porosity of De-nitrate supports the proliferation of both aerobic and anaerobic bacteria that further remove these toxic aquarium byproducts. Even when exhausted as an organic adsorbent, de-nitrate continues to be an excellent support for the biological filter and does not have to be removed.

  • For nitrate removal in freshwater & saltwater aquariums
  • This De-nitrate 500 ml container treats 50 gallons. As long as nitrate concentrations remain under control, the product is not exhausted.
  • De-nitrate should be placed in a place with a flow of water, such as in a canister filter, chemical filtration module or box filter
  • De-Nitrate Article (Seachem Web site)
Seachem Purigen 100 ml
Seachem Purigen, 100 ml
Our Price: $8.15
In Stock

Seachem Purigen 100 ml is a premium synthetic adsorbent that is unlike any other filtration product. It is not a mixture of ion exchangers or adsorbents, but a unique macro-porous synthetic polymer that removes soluble and insoluble impurities from water at a rate and capacity that exceeds all others by over 500%. Purigen controls ammonia, nitrites and nitrates by removing nitrogenous organic waste that would otherwise release these harmful compounds.
  • Purigen Fact Sheet (Seachem Web site)
  • For freshwater & saltwater aquariums
  • Comes in flow through bag
  • Purigen controls ammonia, nitrites and nitrates
  • Purigen’s impact on trace elements is minimal
  • Polishes water
  • 100 ml treats 100 gallons
  • Purigen darkens progressively as it exhausts, and is easily renewed by treating with bleach
Seachem Purigen 250 ml
Seachem Purigen, 250 ml
Our Price: $13.62
In Stock

Seachem Purigen 250 ml is a premium synthetic adsorbent that is unlike any other filtration product. It is not a mixture of ion exchangers or adsorbents, but a unique macro-porous synthetic polymer that removes soluble and insoluble impurities from water at a rate and capacity that exceeds all others by over 500%. Purigen controls ammonia, nitrites and nitrates by removing nitrogenous organic waste that would otherwise release these harmful compounds.

  • Purigen Fact Sheet (Seachem Web site)
  • For freshwater & saltwater aquariums
  • Purigen controls ammonia, nitrites and nitrates
  • Purigen’s impact on trace elements is minimal
  • Polishes water
  • 250 ml treats 250 gallons
  • Purigen darkens progressively as it exhausts, and is easily renewed by treating with bleach
Seachem Purigen 500 ml
Seachem Purigen, 500 ml
Our Price: $24.54
In Stock

Seachem Purigen 500 ml is a premium synthetic adsorbent that is unlike any other filtration product. It is not a mixture of ion exchangers or adsorbents, but a unique macro-porous synthetic polymer that removes soluble and insoluble impurities from water at a rate and capacity that exceeds all others by over 500%. Purigen controls ammonia, nitrites and nitrates by removing nitrogenous organic waste that would otherwise release these harmful compounds.
  • Purigen Fact Sheet (Seachem Web site)
  • For freshwater & saltwater aquariums
  • Purigen controls ammonia, nitrites and nitrates
  • Purigen’s impact on trace elements is minimal
  • Polishes water
  • 500 ml treats 500 gallons
  • Purigen darkens progressively as it exhausts, and is easily renewed by treating with bleach
Thrive B Bio-Stimulant Bottle 20.3 oz 600ml
Thrive B Bio-Stimulant Bottle 20.3 oz (600ml)
Our Price: $18.95
In Stock

Thrive B Bio-Stimulant is designed to decrease phosphates and nitrates naturally in your reef aquarium. Thrive’s Bio-Stimulant Liquid provides a source of organic carbon to bacterioplankton. Bacterioplankton consumes phosphate and nitrate reducing them to a product that is easily removed by your systems skimmer. Thrive’s Bio-Stimulant Liquid provides carbon rich nutrients for care of your bacterioplankton. Thrive’s Bio-Stimulant Liquid encourages new biomass without promoting the red slime or hair algae that would naturally occur in the presence of excess phosphates and nitrates. Do not use this product without a protein skimmer.

When purchasing more B Bio-Stimulant you can refill your bottle with the Thrive B Bio-Stimulant Refill 20.3 oz.

Directions for use:
Add 5 ml per 50 gallons per day until phosphate and nitrate target is obtained. Then dose daily at the rate of 5 ml per 100 gallons per day.
Thrive B Bio-Stimulant Refill 20.3 oz 600ml
Thrive B Bio-Stimulant Refill 20.3 oz (600ml)
Our Price: $12.95
In Stock

Refill for the Thrive B Bio-Stimulant Bottle 20.3 oz (600ml)
Thrive C Bio-Stimulant Crush 250 ml
Thrive C Bio-Stimulant Crush (250 ml)
Our Price: $30.00
In Stock

Phosphate and nitrate accumulation are common problems for many reef aquariums because they slow the growth rates of coral and lead to blooms of red slime and hair algae. In nature, bacterioplankton keep these nutrients in check by metabolizing nitrate and phosphate alongside dissolved organic carbon. In aquariums, dissolved organic carbon is quickly exhausted, causing nitrate and phosphate to accumulate. Thrive C Bio-Stimulant Crush provides dissolved organic carbon that is used by bacterioplankton to create new biomass from nitrate and phosphate. This biomass acts as an efficient nutrient sink and is removed from a reef aquarium by the feeding activity of corals and protein skimming. Use Thrive’s Bio-Stimulant Crush to convert nitrate and phosphate into a living food for faster coral growth and better polyp extension. Thrive’s Bio-Stimulant Crush is made from aragonite and biologically degradable polymers.

Directions for Use:
Fluidize Bio-Stimulant Crush at a rate of 2 ml per 1 gallon. After about 4-6 weeks, nitrate and phosphate levels should start decreasing. You must have both phosphates and nitrates for this product to work. This 250 ml size will treat 125 gallons for 6 to 8 months.
Thrive C Bio-Stimulant Crush 500 ml
Thrive C Bio-Stimulant Crush (500ml)
Our Price: $60.00
In Stock

Phosphate and nitrate accumulation are common problems for many reef aquariums because they slow the growth rates of coral and lead to blooms of red slime and hair algae. In nature, bacterioplankton keep these nutrients in check by metabolizing nitrate and phosphate alongside dissolved organic carbon. In aquariums, dissolved organic carbon is quickly exhausted, causing nitrate and phosphate to accumulate. Thrive C Bio-Stimulant Crush provides dissolved organic carbon that is used by bacterioplankton to create new biomass from nitrate and phosphate. This biomass acts as an efficient nutrient sink and is removed from a reef aquarium by the feeding activity of corals and protein skimming. Use Thrive’s Bio-Stimulant Crush to convert nitrate and phosphate into a living food for faster coral growth and better polyp extension. Thrive’s Bio-Stimulant Crush is made from aragonite and biologically degradable polymers.

Directions for Use:
Fluidize Bio-Stimulant Crush at a rate of 2 ml per 1 gallon. After about 4-6 weeks, nitrate and phosphate levels should start decreasing. You must have both phosphates and nitrates for this product to work. This 500 ml size will treat 250 gallons for 6 to 8 months.
Two Little Fishies NPX Bioplastics 1L
Two Little Fishies NPX Bioplastics, 1L
Our Price: $38.49
In Stock

The Two Little Fishies NPX BioPlastics are pelletized biodegradable polymers that provide a time-released source of food for bacteria that assimilate nitrate and phosphate. As bacteria develop on the pellet surfaces, excess growth sloughs off due to the tumbling in a fluidized filter, and these bacteria can be removed with a protein skimmer or serve as planktonic food for filter-feeding invertebrates such as corals, clams, and sponges. Anaerobic zones also develop within the pellets, thus promoting denitrification there.

Features:
  • 1 L
  • For use in a fluidized reactor, such as the Two Little Fishies Phosban Reactor. When you used with the Phosban Reactor you will need the Phosban Reactor NPX Screen. Use 100 ml per 25 gallons.
  • Can also be used in a media bag within any filter. Use 100 ml per 25 gallons. Because Bioplastics are slowly consumed, more pellets have to be added periodically.
  • These bacteria can be harvested by protein skimmers, so that the nitrate and phosphate levels are naturally reduced. The bacteria are also a food source for filter-feeding invertebrates such as corals, clams, sponges, and feather dusters.
  • Caution: Maintain sufficient water flow through NPX Bioplastics to prevent production of hydrogen sulfide gas. Employ strong water circulation, aeration, and/or a surface skimming overflow in the aquarium to maintain high levels of oxygen saturation. The use of NPX Bioplastics in marine aquariums must be accompanied by the use of a protein skimmer to achieve the export of bacteria and assimilated nutrients. It is not necessary for the outlet of the filter containing pellets to be positioned near the intake of a protein skimmer, but it is necessary to have a protein skimmer running on the system.
Two Little Fishies NPX Bioplastics 200ml
Two Little Fishies NPX Bioplastics, 200ml
Our Price: $8.99
In Stock

The Two Little Fishies NPX BioPlastics are pelletized biodegradable polymers that provide a time-released source of food for bacteria that assimilate nitrate and phosphate. As bacteria develop on the pellet surfaces, excess growth sloughs off due to the tumbling in a fluidized filter, and these bacteria can be removed with a protein skimmer or serve as planktonic food for filter-feeding invertebrates such as corals, clams, and sponges. Anaerobic zones also develop within the pellets, thus promoting denitrification there.

Features:
  • 200 ml
  • For use in a fluidized reactor, such as the Two Little Fishies Phosban Reactor. When you used with the Phosban Reactor you will need the Phosban Reactor NPX Screen. Use 100 ml per 25 gallons.
  • Can also be used in a media bag within any filter. Use 100 ml per 25 gallons. Because Bioplastics are slowly consumed, more pellets have to be added periodically.
  • These bacteria can be harvested by protein skimmers, so that the nitrate and phosphate levels are naturally reduced. The bacteria are also a food source for filter-feeding invertebrates such as corals, clams, sponges, and feather dusters.
  • Caution: Maintain sufficient water flow through NPX Bioplastics to prevent production of hydrogen sulfide gas. Employ strong water circulation, aeration, and/or a surface skimming overflow in the aquarium to maintain high levels of oxygen saturation. The use of NPX Bioplastics in marine aquariums must be accompanied by the use of a protein skimmer to achieve the export of bacteria and assimilated nutrients. It is not necessary for the outlet of the filter containing pellets to be positioned near the intake of a protein skimmer, but it is necessary to have a protein skimmer running on the system.
Two Little Fishies NPX Bioplastics 400ml
Two Little Fishies NPX Bioplastics, 400ml
Our Price: $16.99
In Stock

The Two Little Fishies NPX BioPlastics are pelletized biodegradable polymers that provide a time-released source of food for bacteria that assimilate nitrate and phosphate. As bacteria develop on the pellet surfaces, excess growth sloughs off due to the tumbling in a fluidized filter, and these bacteria can be removed with a protein skimmer or serve as planktonic food for filter-feeding invertebrates such as corals, clams, and sponges. Anaerobic zones also develop within the pellets, thus promoting denitrification there.

Features:
  • 400 ml
  • For use in a fluidized reactor, such as the Two Little Fishies Phosban Reactor. When you used with the Phosban Reactor you will need the Phosban Reactor NPX Screen. Use 100 ml per 25 gallons.
  • Can also be used in a media bag within any filter. Use 100 ml per 25 gallons. Because Bioplastics are slowly consumed, more pellets have to be added periodically.
  • These bacteria can be harvested by protein skimmers, so that the nitrate and phosphate levels are naturally reduced. The bacteria are also a food source for filter-feeding invertebrates such as corals, clams, sponges, and feather dusters.
  • Caution: Maintain sufficient water flow through NPX Bioplastics to prevent production of hydrogen sulfide gas. Employ strong water circulation, aeration, and/or a surface skimming overflow in the aquarium to maintain high levels of oxygen saturation. The use of NPX Bioplastics in marine aquariums must be accompanied by the use of a protein skimmer to achieve the export of bacteria and assimilated nutrients. It is not necessary for the outlet of the filter containing pellets to be positioned near the intake of a protein skimmer, but it is necessary to have a protein skimmer running on the system.