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Fresh Water, Marine, TEST KITS
Seachem Alerts Combo Pack 6 Month
The Alert Combo pack combines Ammonia Alert (1 card) and pH Alert® (1 card). Ammonia Alert and pH Alert are almost half the size of competing products. At 1.5″ x 2.5″, they are small, clear, and unobtrusive, so they won’t detract from the view of your aquarium. Simply place Ammonia Alert and pH Alert visibly anywhere in the aquarium or filter. It’s that easy. No chemicals or test procedures are required.
SKU: n/a -
Fresh Water, Marine, TEST KITS
Seachem Ammonia Alert
Size: UnitAmmonia Alert is an innovative color device for continuously detecting and monitoring toxic free ammonia. A sensor changes reversibly from yellow to green to blue, relative to the ammonia concentration. No test kits, chemicals, or procedures are needed.
KEY FEATURES:
- Seachem sensor technology
- Continuously detects and monitors free ammonia
- No test kits, chemicals, or procedures are needed; just constant readings
- Lasts over a year
- Marine and freshwater
SKU: SE10 -
FISH CARE, Fish Neutrients, Fresh Water, Water Conditioner
Seachem Axolotl Buffer
Why Use It?
Axolotls are sensitive to pH swings and ammonia spikes. This buffer helps create a stable, safe environment while supporting the nitrogen cycle.Would you like help with dosing calculations or troubleshooting pH issues in your axolotl tank?
SKU: n/a -
FISH CARE, Fish Neutrients, Fresh Water, Water Conditioner
Seachem Betta Basics 250ml
Size: 250 mlSeachem Betta Basics is designed to provide the optimal environment for both betta and plant. Betta Basics removes any chlorine, chloramine and detoxifies ammonia. It buffers the water to a pH of 7.0 and provides a healthy environment for fish and plant. Feed NutriDiet Betta Pellet Food for optimal fish health.
FEATURES:
- Creates ideal environment both bettas and plants
- Removes any chlorine, chloramine and detoxifies ammonia
- Buffers to 7.0
DIRECTIONS:
Use with each water change. For best results also use 2–3 times per week. Add 1 capful (5 mL) per each 1.25 L (1.25 quarts) of water. In Betta-only bowls (i.e. no plant) use 1 capful per 4 L (1 US gallon) with water changes.SKU: SE426 -
FISH CARE, Fish Neutrients, Fresh Water, Water Conditioner
Seachem Betta Basics 60ml
Size: 250 mlSeachem Betta Basics is designed to provide the optimal environment for both betta and plant. Betta Basics removes any chlorine, chloramine and detoxifies ammonia. It buffers the water to a pH of 7.0 and provides a healthy environment for fish and plant. Feed NutriDiet Betta Pellet Food for optimal fish health.
FEATURES:
- Creates ideal environment both bettas and plants
- Removes any chlorine, chloramine and detoxifies ammonia
- Buffers to 7.0
DIRECTIONS:
Use with each water change. For best results also use 2–3 times per week. Add 1 capful (5 mL) per each 1.25 L (1.25 quarts) of water. In Betta-only bowls (i.e. no plant) use 1 capful per 4 L (1 US gallon) with water changes.SKU: SE424 -
Fresh Water, Marine, Water Conditioner
Seachem Clarity 250mL
Size: 250mLClarity is the ultimate clarifier for both fresh and saltwater. It employs an advanced polymeric flocculating agent that is both reef and plant safe. Clarity will clear all types of clouding.
KEY FEATURES:
- Water clarifier for marine and freshwater
- Clears all types of clouding
- Reef and plant safe
DIRECTIONS:
Use 1 capful (5mL) for every 80L (20 US gallons). In some situations the cloudiness may increase after adding Clarity, however this is normal and is a sign that Clarity is actively working. Rapid clarification will follow (1-2 hours). In the case of chemical or particulate clouding clean filter floss or cartridge after tank clears.SKU: n/a -
Filter Media, FISH CARE, Fresh Water, Water Conditioner
Seachem Cuprisorb 250ml
Size: 250 mlCupriSorb is a powerful adsorbent of copper and heavy metals. CupriSorb will remove copper more rapidly and efficiently than carbon and is thus ideal for emergency copper removal. It extracts all types of copper, including chelated copper, and remains effective until it turns a deep blue-black color. It may be regenerated repeatedly. If placed in continuous use, it will gradually extract even precipitated copper from the gravel/substrate bed as well. CupriSorb will allow maintenance of invertebrates in copper-treated tanks by removing copper leaching from substrates.
CupriSorb is a powerful copper specific chelating resin. Competing products are not chelating products, but merely cation exchange resins. Such resins can remove copper from freshwater but are ineffective in saltwater.
FEATURES:
- Powerful adsorbent of copper and heavy metals
- Copper specific chelating resin
- Removes all types of copper
DIRECTIONS:
Use 250 mL for every 600 L (150 US gallons) to remove up to 7,500 mg (12 ppm) of copper. Use in filter media bag such as The Bag. For best results, CupriSorb should be placed so as to maximize the flow of water through it. To remove undetectable substrate leaching copper keep CupriSorb in use for at least 2 weeks after copper tests report no copper. Use in a canister filter, chemical filtration module, box filter, or any high flow area of a trickle filter.SKU: SE206 -
Filter Media, Filters, Heaters & Equipment
Seachem de-nitrate 100mL
Size: 100 mLde-nitrate is an economical, natural, porous material with a pore distribution and geometry that promotes both aerobic nitrification within the first few millimeters of depth and anaerobic denitrification at the core. The material has a high surface area and supports a high density of bacteria. Although de-nitrate has capacity to trap nitrate, this, as with other nitrate retaining materials, such as certain zeolites and synthetic resins, is quite limited and the primary mechanism of nitrate removal is anaerobic.
KEY FEATURES:
- Removes nitrates, nitrites, ammonia, and organics
- High porosity biological media
- Pore size well suited for anaerobic bacteria
- No danger of hydrogen sulfide production as with sulfur based media
DIRECTIONS:
For best results, de-nitrate should be placed to assure the flow of water through it, such as in a canister filter, chemical filtration module, or box filter. Flow rate should not exceed 200L (50 US gallons) per hour.SKU: n/a -
Fresh Water, Water Conditioner
SEACHEM EQUILIBRIUM 300G
Size: 300 gSeachem Equilibrium is specifically designed to establish the ideal mineral content for the planted aquarium. Equilibrium contains no sodium or chloride. Equilibrium contains only calcium, magnesium, and potassium salts, which aid in fish metabolism, but are also highly beneficial to plant growth.
KEY FEATURES:
- Restores and maintains mineral balance and GH
- Does not contain sodium or chloride like competing products
- Ideally suited for use with RO or DI water or any mineral deficient water
DIRECTIONS:
To raise mineral content/general hardness (GH) by 1 meq/L (3 dH), add 16g (1 tablespoon) for every 80L (20 US gallons) when setting up an aquarium or when making water changes (add to new water). For optimum solubility we recommend mixing with 1L (1 qt.) of water (the resulting mixture will have a white opaque appearance). When this mixture is added to the aquarium it will impart a slight haze that should clear within 15-30 minutes.SKU: SE446-1 -
Filter Media, Filters, Filters, Heaters & Equipment
Seachem Filter Sock 200 micron welded 17.5×40.5cm
Filter Media, Filters, Filters, Heaters & EquipmentSeachem Filter Sock 200 micron welded 17.5×40.5cm
Seachem Filter Sock 200 Filter socks are a critical component in maintaining water quality in aquariums. They remove suspended debris and detritus, which often lead to excess dissolved organics, nitrate, and phosphate when left unchecked. This makes Seachem Filter Socks an integral addition to any sump and overflow system.
Large: 17.5 x 40.5 cm / 7” x 16” (17.5 cm / 7” plastic collar)
SKU: SE1554 -
Aquascape Essentials, CO2 System
Seachem Glass In Line Diffuser 13mm
Seachem Glass In Line Diffuser 13mm glass Inline Diffuser is a pollen style inline CO2 diffuser that is placed in the outflow line of the filter or aquarium pump to efficiently diffuse CO2 gas into the aquarium. This placement of the diffuser avoids the need for a diffuser in the aquarium and significantly reduces the visibility of the CO2 injection system in the aquascape. This also allows for more rapid diffusion of CO2 into the system and can allow for more consistent levels and reduce waste of CO2 or overdose of CO2
Compatible with 12 mm ID/16 mm OD hoses. Compatible with 6 mm (1/4″) – Standard Airline Tubing. Suction cups included.
SKU: SE3161 -
FISH CARE, Medicine
Seachem Paraguard 250ml
Size: 250mLParaGuard is the only fish and filter safe aldehyde based (10% by weight) parasite control product available (for parasites on fish). Unlike highly toxic and difficult to use formalin based medications, ParaGuard contains no formaldehyde or methanol and will not alter pH.
KEY FEATURES:
- Eradicates ectoparasites and fungal, bacterial, and viral lesions
- Safer to dose than formaldehyde, formalin, and methanol
- Will not adversely effect bio-filter
SKU: SE605-1 -
FISH CARE, Fish Neutrients, Fresh Water, Fresh Water, TEST KITS, Water Conditioner
SEACHEM pH ALERT
Size: UnitpH Alert is a unique color device designed to be placed in the aquarium or filter and monitor pH continuously. A sensor changes color reversibly from yellow to orange to red alerting you to shifts in pH levels between 5.4 and 8.0. Freshwater use only.
KEY FEATURES:
- Continuously monitors pH in freshwater
- Seachem sensor technology
- No tests, no strips
- Lasts up to 4 times as long as competing products
SKU: SE20 -
FISH CARE, Fresh Water, Marine, Water Conditioner
SEACHEM PRIME 250ML
Size: 250 mLSeachem Prime is the complete and concentrated conditioner for both fresh and saltwater. Prime removes chlorine, chloramine and detoxifies ammonia, nitrite, and nitrate. It is non-acidic and will not impact pH.
KEY FEATURES OF SEACHEM PRIME:
- Complete and concentrated conditioner for both fresh and saltwater
- Removes chlorine, chloramine
- DetoxiÞes ammonia, nitrite, and nitrate
- 5X more concentrated than competing products
DIRECTIONS:
Use 1 capful (5mL) for each 200L (50 US gallons) of new water. For smaller volumes, please note each cap thread is approximately 1mL.SKU: SE436 -
Fresh Water, Marine, Water Conditioner
Seachem Prime 500ml
Prime is the complete and concentrated conditioner for both fresh and saltwater. Prime removes chlorine, chloramine and detoxifies ammonia, nitrite, and nitrate. It is non-acidic and will not impact pH.
KEY FEATURES:
- Complete and concentrated conditioner for both fresh and saltwater
- Removes chlorine, chloramine
- DetoxiÞes ammonia, nitrite, and nitrate
- 5X more concentrated than competing products
DIRECTIONS:
Use 1 capful (5mL) for each 200L (50 US gallons) of new water. For smaller volumes, please note each cap thread is approximately 1mL.SKU: SE433 -
FISH CARE, Fresh Water, Marine, Water Conditioner
SEACHEM PRIME BONUS +30% FREE 325ML
Size: 325 mLSeachem Prime Bonus is the complete and concentrated conditioner for both fresh and saltwater. Prime removes chlorine, chloramine and detoxifies ammonia, nitrite, and nitrate. It is non-acidic and will not impact pH.
KEY FEATURES:
- Complete and concentrated conditioner for both fresh and saltwater
- Removes chlorine, chloramine
- DetoxiÞes ammonia, nitrite, and nitrate
- 5X more concentrated than competing products
DIRECTIONS:
Use 1 capful (5mL) for each 200L (50 US gallons) of new water. For smaller volumes, please note each cap thread is approximately 1mL.SKU: SE430 -
Filter Media, Filters
Seachem Purigen 250mL
Purigen 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 other competing products by over 500%. Purigen controls ammonia, nitrites and nitrates by removing nitrogenous organic waste that would otherwise release these harmful compounds.
KEY FEATURES:
- Highest organic removal capacity
- Possesses enhanced capacity owing to its vast surface area; both spherical and macroreticular
- Helps control ammonia/nitrite/nitrate
- Color changes as it exhausts; easily regenerated
DIRECTIONS:
Rinse before use. Use in a fine mesh (180 micron or less) filter bag such as Seachem’s The Bag. For best results, Purigen should be placed so as to maximize the flow of water through it. It may be used in a canister filter, media chamber, box filter, or any high flow area of a trickle filter. Each 250mL treats up to 1,000L (250 US gallons) for up to six months. Exhaustion is indicated by a pronounced discoloration of the beads to dark brown or black.SKU: SE166 -
FISH CARE, Fresh Water, Water Conditioner
Seachem Safe 1KG
Size: 1 kgSeachem Safe is the complete and super-concentrated dry conditioner for both fresh and salt water. Safe removes chlorine, chloramine and detoxifies ammonia, nitrite, and nitrate. It is non-acidic and will not impact pH.
KEY FEATURES:
- Removes chlorine, chloramine, and ammonia
- Detoxifies nitrite and nitrate
- Highly concentrated
- Marine and freshwater
DIRECTIONS:
Use 1.25g (1/4 tsp.) for every 1,250L (300 US gallons) as needed to reduce chlorine and chloramine or use 1.25g (1/4 tsp.) for every 300L (75 US gallons) for ammonia.SKU: SE387 -
Fish Food, Fresh Water
Seachem Safe 4KG
Seachem Safe is the complete and super-concentrated dry conditioner for both fresh and salt water. Safe removes chlorine, chloramine and detoxifies ammonia, nitrite, and nitrate. It is non-acidic and will not impact pH.
KEY FEATURES:
- Removes chlorine, chloramine, and ammonia
- Detoxifies nitrite and nitrate
- Highly concentrated
- Marine and freshwater
DIRECTIONS:
Use 1.25g (1/4 tsp.) for every 1,250L (300 US gallons) as needed to reduce chlorine and chloramine or use 1.25g (1/4 tsp.) for every 300L (75 US gallons) for ammonia.SKU: n/a -
FISH CARE, Fresh Water
Seachem Safe Aquarium Conditioner 1kg
Seachem Safe Aquarium Conditioner – Ultra-Concentrated Water Treatment for Fresh & Saltwater Tanks
Seachem Safe is the ultimate water conditioner for serious aquarists seeking maximum value and performance. This highly concentrated dry formula removes chlorine, chloramine, and detoxifies ammonia, making it ideal for both freshwater and marine aquariums. Perfect for large-scale setups or frequent water changes, Safe ensures a safe, stable environment for fish, invertebrates, and plants.
✅ Key Features:
- Removes chlorine & chloramine instantly
- Detoxifies ammonia, nitrite & heavy metals
- Ideal for large aquariums & aquaculture systems
- Safe for all aquatic life, including sensitive species
- Cost-effective alternative to liquid conditioners
🧪 Why Choose Seachem Safe?
Unlike liquid conditioners, Safe offers exceptional shelf life and unmatched dosing efficiency—just a tiny scoop treats hundreds of gallons. Whether you’re maintaining a planted tank, breeding fish, or managing a commercial setup, Seachem Safe delivers professional-grade water conditioning with zero compromise.
DIRECTIONS:
Use 1.25g (1/4 tsp.) for every 1,250L (300 US gallons) as needed to reduce chlorine and chloramine or use 1.25g (1/4 tsp.) for every 300L (75 US gallons) for ammonia.SKU: n/a -
FISH CARE, Fresh Water
Seachem Safe Aquarium Conditioner 250g
Seachem Safe Aquarium Conditioner – Ultra-Concentrated Water Treatment for Fresh & Saltwater Tanks
Seachem Safe is the ultimate water conditioner for serious aquarists seeking maximum value and performance. This highly concentrated dry formula removes chlorine, chloramine, and detoxifies ammonia, making it ideal for both freshwater and marine aquariums. Perfect for large-scale setups or frequent water changes, Safe ensures a safe, stable environment for fish, invertebrates, and plants.
✅ Key Features:
- Removes chlorine & chloramine instantly
- Detoxifies ammonia, nitrite & heavy metals
- Ideal for large aquariums & aquaculture systems
- Safe for all aquatic life, including sensitive species
- Cost-effective alternative to liquid conditioners
🧪 Why Choose Seachem Safe?
Unlike liquid conditioners, Safe offers exceptional shelf life and unmatched dosing efficiency—just a tiny scoop treats hundreds of gallons. Whether you’re maintaining a planted tank, breeding fish, or managing a commercial setup, Seachem Safe delivers professional-grade water conditioning with zero compromise.
DIRECTIONS:
Use 1.25g (1/4 tsp.) for every 1,250L (300 US gallons) as needed to reduce chlorine and chloramine or use 1.25g (1/4 tsp.) for every 300L (75 US gallons) for ammonia.SKU: n/a -
FISH CARE, Fresh Water, Water Conditioner
Seachem Safe Aquarium Conditioner 4kg
Seachem Safe Aquarium Conditioner – Ultra-Concentrated Water Treatment for Fresh & Saltwater Tanks
Seachem Safe is the ultimate water conditioner for serious aquarists seeking maximum value and performance. This highly concentrated dry formula removes chlorine, chloramine, and detoxifies ammonia, making it ideal for both freshwater and marine aquariums. Perfect for large-scale setups or frequent water changes, Safe ensures a safe, stable environment for fish, invertebrates, and plants.
✅ Key Features:
- Removes chlorine & chloramine instantly
- Detoxifies ammonia, nitrite & heavy metals
- Ideal for large aquariums & aquaculture systems
- Safe for all aquatic life, including sensitive species
- Cost-effective alternative to liquid conditioners
🧪 Why Choose Seachem Safe?
Unlike liquid conditioners, Safe offers exceptional shelf life and unmatched dosing efficiency—just a tiny scoop treats hundreds of gallons. Whether you’re maintaining a planted tank, breeding fish, or managing a commercial setup, Seachem Safe delivers professional-grade water conditioning with zero compromise.
DIRECTIONS:
Use 1.25g (1/4 tsp.) for every 1,250L (300 US gallons) as needed to reduce chlorine and chloramine or use 1.25g (1/4 tsp.) for every 300L (75 US gallons) for ammonia.SKU: n/a -
Filter Media, FISH CARE, Fish Neutrients, Fresh Water, Marine, Water Conditioner
Seachem Stability 4L
Filter Media, FISH CARE, Fish Neutrients, Fresh Water, Marine, Water ConditionerSeachem Stability 4L
Size: 4 LStability will rapidly and safely establish the aquarium biofilter in freshwater and marine systems, thereby preventing the #1 cause of fish death: “new tank syndrome”. Stability is formulated specifically for the aquarium and contains a synergistic blend of aerobic, anaerobic, and facultative bacteria which facilitate the breakdown of waste organics, ammonia, nitrite, and nitrate.
KEY FEATURES:
- New tank stabilization system for marine and freshwater
- Rapidly and safely establishes bio-filter
- Prevents “New Tank Syndrome”
DIRECTIONS:
Shake well before use. Turn off UV/ozone. Use 1 capful (5mL) for each 40L (10 US gallons) on the first day with a new aquarium. Then use 1 capful for each 80L (20 US gallons) daily for 7 days. Fish and other aquatic species may be introduced at any time as long as dosage is maintained for 7 days. For optimum biofilter performance use 1 capful for each 80L (20 US gallons) once a month or with each water change and whenever introducing new fish or whenever medicating an aquarium.SKU: SE129
