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12% Off Red Sea

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  • On Sale 12%
    ReefMat 500 Replacement Fleece (92') Roll - Red Sea
    On Sale 12%

    ReefMat 500 Replacement Fleece (92') Roll - Red Sea

    Red Sea

    $19.99
    $17.59
    Efficient, high-flow, skimmer friendly non-woven polyester fleece-mat rolls. Installation Instructions for EVERY Red Sea Model - https://www.redseafish.com/hardware/reefmat/installation-options/ ReefMat 500 Length: 92' Width: 4.4"
  • On Sale 12%
    Large Bucket Coral Pro Sea Salt Mix (Makes 175 Gallons) - Red Sea
    On Sale 12%

    Large Bucket Coral Pro Sea Salt Mix (Makes 175 Gallons) - Red Sea

    Red Sea

    $94.99
    $83.59
    Red Sea’s Coral Pro Salt contains biologically balanced, elevated levels of the foundation elements (Calcium, Magnesium, Carbonates) necessary for sustainable, accelerated coral growth. Coral Pro Salt is ideal for reef aquariums, in particular for...
  • On Sale 12%
    ReefMat 1200 Replacement Fleece (115') Roll - Red Sea
    On Sale 12%

    ReefMat 1200 Replacement Fleece (115') Roll - Red Sea

    Red Sea

    $31.99
    $28.15
    Efficient, high-flow, skimmer friendly non-woven polyester fleece-mat rolls. Installation Instructions for EVERY Red Sea Model - https://www.redseafish.com/hardware/reefmat/installation-options/ ReefMat 1200 Length: 115' Width: 6.7"
  • On Sale 12%
    225 Micron Felt Filter Sock - Red Sea
    On Sale 12%

    225 Micron Felt Filter Sock - Red Sea

    Red Sea

    $10.99
    $9.67
    High quality, reusable aquarium filter bags providing different levels of mechanical filtration. These 10.5″/26cm long filter bags for Red Sea’s REEFER and MAX-S aquariums will also fit any standard 4″/10cm filter bag holder. Red...
  • On Sale 12%
    Coral Pro Salt Sack (55 lbs Makes 200 Gallons) - Red Sea
    On Sale 12%

    Coral Pro Salt Sack (55 lbs Makes 200 Gallons) - Red Sea

    Red Sea

    $84.99
    $74.79
    Red Sea’s Coral Pro Salt contains biologically balanced, elevated levels of the foundation elements (Calcium, Magnesium, Carbonates) necessary for sustainable, accelerated coral growth. Coral Pro Salt is ideal for reef aquariums, in particular for...
  • On Sale 12%
    Small Bucket Coral Pro Sea Salt Mix (Makes 55 Gallons) - Red Sea
    On Sale 12%

    Small Bucket Coral Pro Sea Salt Mix (Makes 55 Gallons) - Red Sea

    Red Sea

    $44.99
    $39.59
    Red Sea’s Coral Pro Salt contains biologically balanced, elevated levels of the foundation elements (Calcium, Magnesium, Carbonates) necessary for sustainable, accelerated coral growth. Coral Pro Salt is ideal for reef aquariums, in particular for...
  • On Sale 12%
    Reef Energy AB+ Plus Coral Nutrition (1000 ml) - Red Sea
    On Sale 12%

    Reef Energy AB+ Plus Coral Nutrition (1000 ml) - Red Sea

    Red Sea

    $39.99
    $35.19
    An all-in-one superfood that will have your corals thanking you, delivering better growth, higher resilience, brighter colors, greater ease of use with automatic dosers, and minimal over skimming. Based on our long-term research, Reef Energy...
  • On Sale 12%
    225 Micron Thin-Mesh Filter Sock - Red Sea
    On Sale 12%

    225 Micron Thin-Mesh Filter Sock - Red Sea

    Red Sea

    $10.99
    $9.67
    high quality, reusable aquarium filter bags providing different levels of mechanical filtration. These 10.5″/26cm long filter bags for Red Sea’s REEFER and MAX-S aquariums will also fit any standard 4″/10cm filter bag holder. 225...
  • On Sale 12%
    100 Micron Felt Fine Polish Filter Sock - Red Sea
    On Sale 12%

    100 Micron Felt Fine Polish Filter Sock - Red Sea

    Red Sea

    $10.99
    $9.67
    High quality, reusable aquarium filter bags providing different levels of mechanical filtration. These 10.5″/26cm long filter bags for Red Sea’s REEFER and MAX-S aquariums will also fit any standard 4″/10cm filter bag holder. 100...
  • On Sale 12%
    Red Sea Salt Blue Sack (55 lbs Makes 200 Gallons) - Red Sea
    On Sale 12%

    Red Sea Salt Blue Sack (55 lbs Makes 200 Gallons) - Red Sea

    Red Sea

    $84.99
    $74.79
    This is NOT Coral Pro - This is the basic Red Sea Salt in a 200 Gallon Sack. Red Sea Salt contains moderately elevated and balanced levels of the foundation elements (Calcium, Magnesium, Bicarbonates) necessary for sustainable coral growth...
  • On Sale 12%
    REEF SPEC Carbon (100 gm) - Red Sea
    On Sale 12%

    REEF SPEC Carbon (100 gm) - Red Sea

    Red Sea

    $8.99
    $7.91
    REEF-SPEC Carbon Highly activated carbon for marine & reef aquariums Red Sea REEF-SPEC™ Carbon is the ultimate choice for marine & reef aquariums due to its unique technical characteristics. Red Sea REEF-SPEC™Carbon’s granule...
  • On Sale 12%
    Blue Large Bucket Red Sea Salt 175 Gallon (Not Coral Pro) - Red Sea
    On Sale 12%

    Blue Large Bucket Red Sea Salt 175 Gallon (Not Coral Pro) - Red Sea

    Red Sea

    $94.99
    $83.59
    Now Available in an Easier to Ship Box - No More Broken Buckets with Salt Everywhere - https://www.saltwateraquarium.com/red-sea-salt-mix-blue-box-makes-160-gallons-red-sea/ Red Sea Salt contains biologically balanced, elevated levels of...
  • On Sale 12%
    Net Cover Zig Zag 15/40mm (R42085) - Red Sea
    On Sale 12%

    Net Cover Zig Zag 15/40mm (R42085) - Red Sea

    Red Sea

    $7.99
    $7.03
    Net Cover Zig Zag 15/40mm | Item code R42085 Use for circumventing equipment mounts such as LED ZigZag 15  Left (F) – 1 ZigZag 15  Right (F) – 1 ZigZag 40  Left (F) – 1 ZigZag 40  Right...
  • On Sale 12%
    REEF SPEC Carbon (500ml) - Red Sea
    On Sale 12%

    REEF SPEC Carbon (500ml) - Red Sea

    Red Sea

    $14.99
    $13.19
    REEF-SPEC Carbon Highly activated carbon for marine & reef aquariums Red Sea REEF-SPEC™ Carbon is the ultimate choice for marine & reef aquariums due to its unique technical characteristics. Red Sea REEF-SPEC™Carbon’s granule...
  • On Sale 12%
    Reef Energy AB+ Plus Coral Nutrition (500 ml) - Red Sea
    On Sale 12%

    Reef Energy AB+ Plus Coral Nutrition (500 ml) - Red Sea

    Red Sea

    $27.99
    $24.63
    An all-in-one superfood that will have your corals thanking you, delivering better growth, higher resilience, brighter colors, greater ease of use with automatic dosers, and minimal over skimming. Based on our long-term research, Reef Energy...
  • On Sale 12%
    Reef Foundation B - Alkalinity (KH) (1000 ml) Liquid - Red Sea
    On Sale 12%

    Reef Foundation B - Alkalinity (KH) (1000 ml) Liquid - Red Sea

    Red Sea

    $28.99
    $25.51
    KH/Alkalinity Supplement Carbonate & buffer complex for balanced formation of coral skeleton It’s all in the balance Calcium, Magnesium, Strontium and Carbonate are the basic foundation elements of coral skeletons.All of these elements...
  • On Sale 12%
    2 Pack - Reusable Black Mesh Filter Media Bag (10" x 5.5") - Red Sea
    On Sale 12%

    2 Pack - Reusable Black Mesh Filter Media Bag (10" x 5.5") - Red Sea

    Red Sea

    $7.99
    $7.03
    The high quality draw-string nylon media bag supplied with our Reef Spec Carbon is now available as a regular product ideal for all holding all types of media. Ideal mesh size for all aquarium filter media. Reusable
  • On Sale 12%
    MCP Test Kit Marine Master Care - Red Sea
    On Sale 12%

    MCP Test Kit Marine Master Care - Red Sea

    Red Sea

    $74.99
    $65.99
    Easy-to-use tests for the accurate monitoring of all of the important parameters during the biological maturation of marine and reef aquariums NH3/NH4 | NO3 | NO2 | pH | KH Red Sea Marine Care Test Kit is Complete multi-test pack including all of...
  • On Sale 12%
    Blue Small Bucket Red Sea Salt 55 Gallon (Not Coral Pro) - Red Sea
    On Sale 12%

    Blue Small Bucket Red Sea Salt 55 Gallon (Not Coral Pro) - Red Sea

    Red Sea

    $34.99
    $30.79
    Red Sea Salt contains biologically balanced, elevated levels of the foundation elements (Calcium, Magnesium, Carbonates) necessary for sustainable, accelerated coral growth. Red Sea Salt is ideal for reef aquariums, in particular for LPS...
  • On Sale 12%
    ReefDose Deluxe 4-Color Tube Kit (Blue/Green) - Red Sea
    On Sale 12%

    ReefDose Deluxe 4-Color Tube Kit (Blue/Green) - Red Sea

    Red Sea

    $33.00
    $29.04
    Deluxe 4-color tube kit Everything required to connect a dosing pump in one convenient kit. Available in 2 color versions (blue/green and red/yellow), providing 8 unique colors for easily identifying a full range of supplements from container to dosing...
  • On Sale 12%
    4" Red Sea Reefer Filter Media Cup w/Media Bag - Red Sea
    On Sale 12%

    4" Red Sea Reefer Filter Media Cup w/Media Bag - Red Sea

    Red Sea

    $15.99
    $14.07
    4" filter media cups include a free high quality filter media bag, as used in Red Sea Reef-Spec Carbon. Cup Dimensions: 4.25 x 4.25 x 8.5"
  • On Sale 12%
    Net Cover Universal Cut Out Kit (R42086) - Red Sea
    On Sale 12%

    Net Cover Universal Cut Out Kit (R42086) - Red Sea

    Red Sea

    $9.99
    $8.79
    Net Cover universal Cut out Kit | Item code R42086 Use for larger cut outs External corner (A) Internal corner (B) Cut out Profile (P3) Keep your finny friends safe inside your tank with a...
  • On Sale 12%
    REEF SPEC Carbon (2000ml) - Red Sea
    On Sale 12%

    REEF SPEC Carbon (2000ml) - Red Sea

    Red Sea

    $38.99
    $34.31
    REEF-SPEC Carbon Highly activated carbon for marine & reef aquariums Red Sea REEF-SPEC™ Carbon is the ultimate choice for marine & reef aquariums due to its unique technical characteristics. Red Sea REEF-SPEC™Carbon’s granule...
  • On Sale 12%
    24" x 24" Customizable DIY Aquarium Screen Net Cover Kit (R42080) - Red Sea
    On Sale 12%

    24" x 24" Customizable DIY Aquarium Screen Net Cover Kit (R42080) - Red Sea

    Red Sea

    $57.99
    $51.03
    Customizable DIY Aquarium Net Cover COMES UNASSEMBLED IN A TUBE - YOU MUST CUT AND BUILD THIS YOURSELF STOCK PHOTO SHOWS WHAT CAN BE DONE WITH EXTRA PARTS SOLD SEPARATELY - THIS KIT ONLY MAKES A MAX SIZE RECTANGLE LISTED   Keep your finny...
  • On Sale 12%
    Reef Energy AB+ Plus Coral Nutrition (250 ml) - Red Sea
    On Sale 12%

    Reef Energy AB+ Plus Coral Nutrition (250 ml) - Red Sea

    Red Sea

    $20.49
    $18.03
    An all-in-one superfood that will have your corals thanking you, delivering better growth, higher resilience, brighter colors, greater ease of use with automatic dosers, and minimal over skimming. Based on our long-term research, Reef Energy...
  • On Sale 12%
    Trace Colors ABCD 4-Pack Supplements (4 @ 100ml) - Red Sea
    On Sale 12%

    Trace Colors ABCD 4-Pack Supplements (4 @ 100ml) - Red Sea

    Red Sea

    $27.99
    $24.63
    Red Sea's Coral Colors ABCD Provides the 31 minor and trace elements required by corals: A – Halogens (I2, Br2, F2) B – Potassium & Boron C – Fe & 7 Complementary Metals D – 18 Bioactive Trace Elements Coral...
  • On Sale 12%
    ReefMat 250 Replacement Fleece Roll - Red Sea
    On Sale 12%

    ReefMat 250 Replacement Fleece Roll - Red Sea

    Red Sea

    $15.99
    $14.07
    Efficient, high-flow, skimmer friendly non-woven polyester fleece-mat rolls. Installation Instructions for EVERY Red Sea Model - https://www.redseafish.com/hardware/reefmat/installation-options/ ReefMat 250 3.2” - Fleece-mat width
  • On Sale 12%
    Reef Foundation C - Magnesium (MG) (1000 ml) Liquid - Red Sea
    On Sale 12%

    Reef Foundation C - Magnesium (MG) (1000 ml) Liquid - Red Sea

    Red Sea

    $28.99
    $25.51
    Magnesium Supplement Magnesium supplement for balanced formation of coral skeleton It’s all in the balance Calcium, Magnesium, Strontium and Carbonate are the basic foundation elements of coral skeletons.All of these elements need to be...
  • On Sale 12%
    ReefDose Doser 4 Head Wireless Dosing Pump - Red Sea
    On Sale 12%

    ReefDose Doser 4 Head Wireless Dosing Pump - Red Sea

    Red Sea

    $429.00
    $377.52
    ReefDose is designed and built specifically for the daily supplementing of reef aquariums.  ReefDose uses bespoke (patent-pending) single-drop-accuracy dosing heads together with an advanced controller that provides a full suite of features...
  • On Sale 12%
    Trace Colors A - Iodine (500 ml) - Red Sea
    On Sale 12%

    Trace Colors A - Iodine (500 ml) - Red Sea

    Red Sea

    $19.99
    $17.59
    Coral Color A: A complex of halogens (Iodine, Bromine and Fluorine). The halogens act both as antioxidants and oxidative agents within the soft tissue and mucus layer of corals, reducing the possibility of coral bleaching. In active reef systems, these...
  • On Sale 12%
    Reef Foundation A - Calcium (CA) (1000 ml) Liquid - Red Sea
    On Sale 12%

    Reef Foundation A - Calcium (CA) (1000 ml) Liquid - Red Sea

    Red Sea

    $28.99
    $25.51
    Calcium+ Supplement Calcium and Strontium complex for balanced formation of the coral skeleton It’s all in the balance Calcium, Magnesium, Strontium and Carbonate are the basic foundation elements of coral skeletons.All of these elements...
  • On Sale 12%
    Magnesium Pro Test Refill - Red Sea
    On Sale 12%

    Magnesium Pro Test Refill - Red Sea

    Red Sea

    $24.99
    $21.99
    Red Sea’s Magnesium Pro Test Kit is an advanced titration test, measuring the level of magnesium in your reef aquarium to an exceptionally high accuracy of 20 ppm. The Magnesium Pro Test test kit enables the accurate dosing of Red Sea’s...
  • On Sale 12%
    REEF SPEC Carbon (1000ml) - Red Sea
    On Sale 12%

    REEF SPEC Carbon (1000ml) - Red Sea

    Red Sea

    $23.99
    $21.11
    REEF-SPEC Carbon Highly activated carbon for marine & reef aquariums Red Sea REEF-SPEC™ Carbon is the ultimate choice for marine & reef aquariums due to its unique technical characteristics. Red Sea REEF-SPEC™Carbon’s granule...
  • On Sale 12%
    36" x 24" Customizable DIY Aquarium Screen Net Cover Kit (R42081) - Red Sea
    On Sale 12%

    36" x 24" Customizable DIY Aquarium Screen Net Cover Kit (R42081) - Red Sea

    Red Sea

    $62.99
    $55.43
    Customizable DIY Aquarium Net Cover COMES UNASSEMBLED IN A TUBE - YOU MUST CUT AND BUILD THIS YOURSELF STOCK PHOTO SHOWS WHAT CAN BE DONE WITH EXTRA PARTS SOLD SEPARATELY - THIS KIT ONLY MAKES A MAX SIZE RECTANGLE LISTED   Keep your finny...
  • On Sale 12%
    Calcium Pro Test Refill - Red Sea
    On Sale 12%

    Calcium Pro Test Refill - Red Sea

    Red Sea

    $24.99
    $21.99
    Refill contains all reagents used in the Red Sea calcium test kitCalcium, an essential component in the building of coral skeletons, is constantly depleted from the aquarium and needs to be monitored on a regular basis. Calcium Pro is an advanced calcium...
  • On Sale 12%
    Trace Colors C - Iron+ (500 ml) - Red Sea
    On Sale 12%

    Trace Colors C - Iron+ (500 ml) - Red Sea

    Red Sea

    $19.99
    $17.59
    Coral Color C: A complex of 8 “light” metals that includes Iron, Manganese, Cobalt, Copper, Aluminum, Zinc, Chrome and Nickel. These micro-elements are essential to many bio-chemical metabolic processes, including respiration, production of...