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On Sale 51%
On Sale 51%(EXPIRED 11/25) KH/Alkalinity Pro-High Accuracy Titration Test kit (75 tests) - Red Sea
Red Sea$44.99$21.99EXPIRED Red Sea’s KH/Alkalinity Pro Test Kit is an advanced titration test, measuring the level of buffers in your reef aquarium to an exceptionally high accuracy of 0.05 meq/l (0.14 dKH).Red... -
On Sale 51%
On Sale 51%(EXPIRED 11/25) Nitrate Pro (NO3) High Definition Comparator Test Kit - 100 Tests - Red Sea
Red Sea$54.99$26.99Red Sea’s Nitrate Pro Test Kit is an advanced colorimetric test with comparator, measuring the level of nitrate in your reef aquarium to an exceptionally high accuracy of 0.12ppm NO3... -
On Sale 50%
On Sale 50%(EXPIRED 12/25) Algae Control Pro Multi Test Kit Nitrate/Phosphate - NO3/PO4 - Red Sea
Red Sea$79.99$39.99EXPIRED Red Sea’s Algae Control Pro Kit includes high accuracy colorimetric comparator tests for the exceptionally high accuracy measurement of nitrate and phosphate. The nitrate &... -
On Sale 29%
On Sale 29%(EXPIRED) 11/25- Phosphate Pro Test Kit (PO4) - 100 Tests - Red Sea
Red Sea$54.99$38.99EXPIRED 11/25 Red Sea’s Phosphate Pro Test Kit is an advanced colorimetric test with comparator, measuring the level of phosphate in your reef aquarium to an exceptionally high accuracy of 0... -
On Sale 23%
On Sale 23%(EXPIRED) Reef Energy AB+ Plus Coral Food (250 ml) - Red Sea
Red Sea$21.99$16.99EXPIRED 10 2025 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... -
On Sale 12%
On Sale 12%(OPEN BOX) Max 130D Circulation Pump Upgrade Kit - Red Sea
Red Sea$67.95$59.99UNUSED CUSTOMER RETURN As part of our continued efforts to improve the performance of our products we are pleased to announce the availability of a retrofit improvement for all Red Sea MAX® 130... -
On Sale 10%
On Sale 10%(OPEN BOX) 3-in-1 ReefATO + Auto Top Off System ATO - Red Sea
Red Sea$200.00$179.99UNUSED CUSTOMER RETURN The ReefATO+ is an exceptionally reliable auto top-off system that includes a highly accurate temperature monitor plus an external leak detector and is supplied with a smart... -
On Sale 16%
On Sale 16%(OPEN BOX) 4" Red Sea Reefer Filter Media Cup w/Media Bag - Red Sea
Red Sea$17.95$14.99UNUSED CUSTOMER RETURN 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 10%
On Sale 10%(OPEN BOX) KH/Alkalinity Pro-High Accuracy Titration Test kit (75 tests) - Red Sea
Red Sea$41.99$37.99NO BOXRed Sea’s KH/Alkalinity Pro Test Kit is an advanced titration test, measuring the level of buffers in your reef aquarium to an exceptionally high accuracy of 0.05 meq/l (0.14 dKH).Red... -
On Sale 8%
On Sale 8%(OPEN BOX) Large Bucket Coral Pro Sea Salt Mix (Makes 175 Gallons) - Red Sea
Red Sea$97.99$89.99BUCKETDAMAGED - BUT SALT UNDAMAGED Red Sea’s Coral Pro Salt contains biologically balanced, elevated levels of the foundation elements (Calcium, Magnesium, Carbonates) necessary for... -
On Sale 12%
On Sale 12%(OPEN BOX) Reef Foundation A Dry - Calcium (CA) (1 KG) Powder - Red Sea
Red Sea$33.99$29.99UNUSED CUSTOMER RETURN Calcium+ Supplement Calcium and Strontium complex for balanced formation of the coral skeleton It’s all in the balance Calcium, Magnesium, Strontium and... -
On Sale 13%
On Sale 13%(OPEN BOX) ReefDose Red/Yellow Tubes - Red Sea
Red Sea$17.25$14.99UNUSED CUSTOMER RETURN Red/Yellow Tubes - 4 x 3m (10') -
On Sale 10%
On Sale 10%(OPEN BOX) Reefer RSK-300 Protein Skimmer - Red Sea
Red Sea$399.00$359.99BOX DAMAGED - UNIT FINE Designed with hobbyists needs in mind the highly effective flow dynamics of the REEFER™ Skimmer will maintain an optimal ORP (REDOX) level of over 350mv, a... -
On Sale 11%
On Sale 11%(OPEN BOX) ReefMat 1200 Fleece Roller Filter - Red Sea
Red Sea$449.00$399.99UNUSED CUSTOMER RETURN The ReefMat is a plug & play, fully automated, smart fleece roller filter that keeps your aquarium water crystal clear for weeks at a time. Installation Instructions for... -
On Sale 10%
On Sale 10%(OPEN BOX) ReefMat 250 Fleece Roller Filter - Red Sea
Red Sea$349.00$314.99UNUSED CUSTOMER RETURN The ReefMat is a plug & play, fully automated, smart fleece roller filter that keeps your aquarium water crystal clear for weeks at a time. Installation Instructions for... -
On Sale 15%
On Sale 15%(OPEN BOX) ReefRun Dual Red Sea Pump Controller - Red Sea
Red Sea$189.00$159.99UNUSED CUSTOMER RETURN The ReefRun Dual Controller offers great value as it can run both the REEFER DC Skimmer & ReefRun DC Pump (or two ReefRun DC Pumps) at the same time! The... -
On Sale 10%
On Sale 10%(OPEN BOX) ReefWave 25 Aquarium Gyre Flow Pump - Red Sea
Red Sea$359.00$323.99UNUSED CUSTOMER RETURN Based on the Gyre patented, cross-flow technology, the ReefWave pumps provide optimal REEF-SPEC® water flow for corals in a wide range of reefscapes, regardless of their... -
On Sale 12%
On Sale 12%(OPEN BOX) ReefWave 45 Aquarium Gyre Flow Pump - Red Sea
Red Sea$409.00$359.99UNUSED CUSTOMER RETURN Based on the Gyre patented, cross-flow technology, the ReefWave pumps provide optimal REEF-SPEC® water flow for corals in a wide range of reefscapes, regardless of their... -
(R35254) Replacement ReefWave 25 Service Maintenance Kit Pack w/Snail Guard - Red Sea
Red Sea$19.99Only fits ReefWave 25 -
(R35255) Replacement ReefWave 45 Service Maintenance Kit Pack w/Snail Guard - Red Sea
Red Sea$19.99Only fits ReefWave 45