Aquarium Water Purification

Browse conditioners, RODI systems and marine salt mixes used in community aquariums.

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Popular equipment · Water Purification

311 matching items · Most used first

Mur-lok RO Elbow - Male NPT x Push ConnectWater Purification

G.A. Murdock

Mur-lok RO Elbow - Male NPT x Push Connect

The Mur-lok RO Elbow (Male NPT x Push Connect) is a 90-degree American-made RO fitting with dual EPDM O-rings for a straight, leak-free fit. Available in multiple thread sizes, it is constructed from FDA-approved polypropylene and is NSF Standard 58 certified.

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Mur-lok RO Elbow - Stem x Push ConnectWater Purification

G.A. Murdock

Mur-lok RO Elbow - Stem x Push Connect

The Mur-lok RO Elbow (Stem x Push Connect) is a 90-degree American-made RO fitting with dual EPDM O-rings for a straight, leak-free fit, available in 1/4" and 1/2" sizes in white or black. It is constructed from FDA-approved polypropylene and is NSF Standard 58 certified.

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Mur-lok RO Elbow Union Push ConnectWater Purification

G.A. Murdock

Mur-lok RO Elbow Union Push Connect

The Mur-lok RO Elbow Union Push Connect is a 90-degree American-made RO fitting with dual EPDM O-rings for a straight, leak-free fit, joining push-connect tubing in 1/4", 3/8", and 1/2" sizes in white or black. It is constructed from FDA-approved polypropylene and is NSF Standard 58 certified.

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Mur-lok RO Inline Ball Valve Push ConnectWater Purification

G.A. Murdock

Mur-lok RO Inline Ball Valve Push Connect

The Mur-lok RO Inline Ball Valve Push Connect is an American-made inline ball valve for turning off water flow in RO/DI plumbing, available in 1/4", 3/8", and 1/2" push-connect sizes. It features dual EPDM O-rings for leak-free operation, polypropylene construction, and NSF Standard 58 certification.

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Mur-lok RO Stem Adapter x Male NPTWater Purification

G.A. Murdock

Mur-lok RO Stem Adapter x Male NPT

The Mur-lok RO Stem Adapter x Male NPT is an American-made adapter that plugs a stem directly into another push-connect fitting, eliminating the need for a short piece of tubing between two fittings. Available in 1/4" and 1/2" sizes, it is constructed from FDA-approved materials.

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Mur-lok RO Straight Union Push ConnectWater Purification

G.A. Murdock

Mur-lok RO Straight Union Push Connect

The Mur-lok RO Straight Union Push Connect is an American-made straight union fitting joining two pieces of 1/4" push-connect RO tubing, with dual EPDM O-rings for a leak-free fit. It is constructed from FDA-approved polypropylene and is NSF Standard 58 certified.

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Mur-lok RO Tee Union Push ConnectWater Purification

G.A. Murdock

Mur-lok RO Tee Union Push Connect

The Mur-lok RO Tee Union Push Connect is an American-made tee fitting for splitting 1/4" RO tubing into two lines, with dual EPDM O-rings for a leak-free fit. It is constructed from FDA-approved polypropylene and is NSF Standard 58 certified.

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Mur-lok RO Tube Divider 1/4" x 1/4" x 1/4" Push ConnectWater Purification

G.A. Murdock

Mur-lok RO Tube Divider 1/4" x 1/4" x 1/4" Push Connect

The Mur-lok RO Tube Divider (1/4" x 1/4" x 1/4" Push Connect) is an American-made wye fitting that splits water flow in any direction, used to tie RO product water lines together in dual-membrane systems. It features dual EPDM O-rings, FDA-approved polypropylene construction, and NSF Standard 58 certification.

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Natural Clear 1/4" Polyethylene RO TubingWater Purification

G.A. Murdock

Natural Clear 1/4" Polyethylene RO Tubing

Mur-lok Natural Clear 1/4" polyethylene RO tubing is 1/4" OD (outside diameter) tubing designed for reverse osmosis and RODI systems and compatible with all 1/4" push-connect fittings. The semi-translucent clear tubing, sold in 50 ft or 100 ft lengths, is made in the USA from BPA-free, FDA-approved LLDPE that is NSF 58 certified for drinking water use.

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NeoMarine Salt MixWater Purification

Brightwell Aquatics

NeoMarine Salt Mix

Brightwell Aquatics NeoMarine Salt Mix is a precision-formulated salt that replicates natural seawater ratios of all major, minor, and trace elements, mixed 134 g per gallon for 1.025 specific gravity, available in a 14.7 lb bag (50 gallons) or 44.2 lb bucket (150 gallons).

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Nitri-Bac 150 mlWater Purification

Modern Reef

Nitri-Bac 150 ml

Modern Reef Nitri-Bac (150 ml) is live marine nitrifying bacteria grown on micro substrate for cycling new reef aquariums; removes toxic ammonia and nitrite 100% naturally and instantly creates biological filtration. New cycling: apply AmmoMix, then add 50 ml per 100 L; maintenance: 5 ml per 100 L weekly after water changes, when adding new fish, or after treatment.

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Nitribiotic 50mlWater Purification

Tropic Marin

Nitribiotic 50ml

Tropic Marin Nitribiotic is a combination of probiotic and nitrifying bacteria in one preparation that strengthens the immune-system defenses of fish and shrimps and improves water quality. Nitrifying bacteria efficiently start nitrification, breaking toxic ammonia down into non-toxic nitrate; the purple bacteria oxidize toxic hydrogen sulphide to non-toxic sulphur and sulphate; probiotic bacteria and yeasts positively affect health and well-being, especially when breeding. Suitable for any aquarium stock; easy-to-dose liquid; odorless. Begin with 1 mL per 100 L, then 1 mL per 200 L weekly; turn off UV, ozonizers, and skimmers before dosing, turning on again 3-4 hours later; up to double dose is safe.

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NP-Bacto-Balance 1000 mlWater Purification

Tropic Marin

NP-Bacto-Balance 1000 ml

Tropic Marin NP-Bacto-Balance is ideal for keeping nitrate and phosphate low while maintaining the important balance between these key nutrients; its balanced composition of carefully selected organic and inorganic nutrients reduces nitrate and phosphate while improving coloration and growth of corals, sponges, and other filter feeders; prevents nutrient deficiency. Also contains the same trace elements of Tropic Marin K+ Elements in the same concentration. Dose 0.25 mL per 100 L per day for new/young tanks (0-1 yr), up to 0.5 for medium age (1-2 yr), 0.5-1 for mature (>2 yr); max 1 mL per 100 L per day; add to high-flow area at the beginning of the lighting cycle.

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NP-Bacto-Balance 500 mlWater Purification

Tropic Marin

NP-Bacto-Balance 500 ml

Tropic Marin NP-Bacto-Balance (500 mL) is ideal for keeping nitrate and phosphate low while maintaining the important balance between these key nutrients; its balanced composition of carefully selected organic and inorganic nutrients reduces nitrate and phosphate while improving coloration and growth of corals, sponges, and other filter feeders; prevents nutrient deficiency. Also contains the same trace elements of Tropic Marin K+ Elements in the same concentration. Dose 0.25 mL per 100 L per day for new/young tanks (0-1 yr), up to 0.5 for medium age (1-2 yr), 0.5-1 for mature (>2 yr); max 1 mL per 100 L per day; add to high-flow area at the beginning of the lighting cycle.

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NP-Bacto-Pellets 1000mlWater Purification

Tropic Marin

NP-Bacto-Pellets 1000ml

Tropic Marin NP-Bacto-Pellets is an easy-to-use organic filter media for pellet reactors for the effective biological removal of nitrate and phosphate; made of natural biopolymers that promote colonization and growth of nitrate- and phosphate-removing bacteria and other microorganisms. Nitrogen and phosphorus are extracted from the water; the resulting nutrient-rich biomass is flushed into the aquarium as a basic food resource for corals and other filter feeders or skimmed out. Helps corals show their brightest colors; ideal for reef or fish-only systems. For use in a pellet/fluidized reactor; soak pellets in boiling hot water 2 hours before use. Start with 50 mL per 100 L; double after four weeks if necessary; do not exceed 200 mL per 100 L; use a protein skimmer for nutrient removal and gas exchange; top up monthly to replace degraded material.

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NP-Bacto-Pellets 500mlWater Purification

Tropic Marin

NP-Bacto-Pellets 500ml

Tropic Marin NP-Bacto-Pellets (500 mL) is an easy-to-use organic filter media for pellet reactors for the effective biological removal of nitrate and phosphate; made of natural biopolymers that promote colonization and growth of nitrate- and phosphate-removing bacteria and other microorganisms. Nitrogen and phosphorus are extracted from the water; the resulting nutrient-rich biomass is flushed into the aquarium as a basic food resource for corals and other filter feeders or skimmed out. Helps corals show their brightest colors; ideal for reef or fish-only systems. For use in a pellet/fluidized reactor; soak pellets in boiling hot water 2 hours before use. Start with 50 mL per 100 L; double after four weeks if necessary; do not exceed 200 mL per 100 L; use a protein skimmer for nutrient removal and gas exchange; top up monthly to replace degraded material.

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Optimus Water ConditionerWater Purification

NT Labs

Optimus Water Conditioner

A concentrated water conditioner and dechlorinator from NT Labs for freshwater and marine aquariums; it removes chlorine, chloramine, and halogens, detoxifies heavy metals, and temporarily binds ammonia, nitrite, and nitrate into a safer form for biological filtration.

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Paracoccus PowderWater Purification

Bulk Reef Supply

Paracoccus Powder

BRS Paracoccus Powder is a natural source of astaxanthin and carotenoids derived from Paracoccus carotinifaciens, used to enhance red, orange and warm color tones in marine fish and invertebrates such as clownfish, wrasses and shrimp. It is mixed with frozen, freeze-dried or prepared foods during rehydration as a food soak or nutritional additive.

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Pentair Smart UV Sterilizer Mounting Clamps V2 (2-Pack) - BlackWater Purification

Neat Aquatics

Pentair Smart UV Sterilizer Mounting Clamps V2 (2-Pack) - Black

Neat Aquatics Pentair Smart UV Sterilizer Mounting Clamps V2 secure 18W, 25W, and 40W Pentair Smart UV Sterilizers to a wall or aquarium stand vertically or horizontally. The black 2-pack includes quick release clamps, mounting screws, and corrosion-resistant stainless steel hardware so the sterilizer can be removed in seconds for maintenance without tools.

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Plus-NP 200 mlWater Purification

Tropic Marin

Plus-NP 200 ml

Tropic Marin Plus-NP is a highly concentrated nitrogen and phosphorus additive for optimal coral growth and coloration. Designed for reef aquariums that are very low in nutrients (ULNS), counteracting nutrient deficiencies that impact coral growth and coloration and encourage dinoflagellates.

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Pohl's K-Balance 1000mlWater Purification

Korallen Zucht

Pohl's K-Balance 1000ml

Korallen Zucht Pohl's K-Balance (1000 ml) is a potassium concentrate containing multiple potassium salts in high concentration; potassium is a major element in seawater (~390 mg/L). Enhances growth and coloration of all corals, especially SPS like Montipora, Stylopora, Seriatopora, Pocillopora, Acropora; improves polyp expansion; dosing 1 ml/100 L per day; do not exceed labeled dosage; check potassium regularly like Ca or Mg.

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Polyplab Medic 30mL, For Ich and External ParasitesWater Purification

Polyplab

Polyplab Medic 30mL, For Ich and External Parasites

PolypLab Medic (30 mL) is a highly effective water conditioner used to de-pollute water in marine and freshwater environments; contains a reef-safe oxidizing agent particularly effective against Marine Ich (Cryptocaryon irritans), Freshwater Ich (Ichthyophthirius), and Marine Velvet (Amyloodinium ocellatum). Completely reef-safe, buffered to maintain physiological pH, does not harm invertebrates or nitrifying bacteria. For in-tank treatment: 1 level scoop per 190 L twice daily for 10-20 days; do not use ozone or carbon during treatment; run activated carbon for 2-3 days after.

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Prime - Complete Concentrated Water ConditionerWater Purification

Seachem

Prime - Complete Concentrated Water Conditioner

Seachem Prime is a complete, concentrated water conditioner for freshwater and saltwater aquariums that removes chlorine and chloramine and detoxifies ammonia, nitrite, nitrate, and heavy metals in tap water without affecting pH or over-activating protein skimmers. It is 5x more concentrated than competing dechlorinators (5 mL treats 50 gallons) and is available in 100 mL, 250 mL, and 500 mL bottles.

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Pro Reef Salt MixWater Purification

Tropic Marin

Pro Reef Salt Mix

Tropic Marin Pro Reef Salt is a pharmaceutical-grade sea salt mix with balanced calcium (440 ppm), magnesium (1350 ppm), and alkalinity (7 dKH) plus 70 trace elements, suited for reef aquariums including calcium reactor systems.

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Pro-Discus Mineral 250gWater Purification

Tropic Marin

Pro-Discus Mineral 250g

Tropic Marin Pro-Discus Mineral (250 g) is for the prevention of mineral deficiency in discus aquariums. Enhances resistance against disease and damage to skeletal structure and improves willingness to spawn.

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Pro-Discus Mineral 500gWater Purification

Tropic Marin

Pro-Discus Mineral 500g

Tropic Marin Pro-Discus Mineral (500 g) is for the prevention of mineral deficiency in discus aquariums. Enhances resistance against disease and damage to skeletal structure and improves willingness to spawn.

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