Seachem Clarity Bonus 325ml Water clarifier for marine and freshwater Clears all types of clouding Reef and plant safe Clarity™ is the ultimate clarifier for both fresh and saltwater. It employs an advanced polymeric flocculating agent that is...

API Freshwater Mini pH Test Kit   Keep your fish healthy and thriving by testing your aquarium water's pH regularly with easy-to-use API Freshwater Aquarium pH Test Kit. Testing water parameters weekly helps prevent invisible water...

Seachem SeaGel 250mL Removes phosphate, silicate, organics, metals, acids, and more 50/50 blend of MatrixCarbon™ and PhosGuard™ More convenient than two separate bags of media SeaGel™ is a blend...

Seachem Reef Trace 500mL Supplies a broad range of trace elements Reef Trace™ may be used alone or in conjunction with Reef Plus™ Reef Trace™ is nitrate/phosphate free Replenishment of a number of trace elements is required to...

Seachem Reef Trace 100mL Supplies a broad range of trace elements Reef Trace™ may be used alone or in conjunction with Reef Plus™ Reef Trace™ is nitrate/phosphate free Replenishment of a number of trace elements is required to...

Seachem Reef Reactor MD 2L  High-purity calcium reactor media Provides calcium, magnesium, strontium, potassium, and carbonates .5 - 1 cm grain size Reef Reactor™ is a high-purity source of aragonite, which supplies all important elements...

Seachem Reef Iodide 500mL Stabilized potassium iodide source  Safe and easy to use Important for soft tissue growth Iodide is an important element required by invertebrates and many soft corals (gorgonians, sarcophytons, etc). Reef Iodide™...

Seachem Reef Iodide 250mL Stabilized potassium iodide source  Safe and easy to use Important for soft tissue growth Iodide is an important element required by invertebrates and many soft corals (gorgonians, sarcophytons, etc). Reef Iodide™...

Seachem Reef Iodide 100mL Stabilized potassium iodide source  Safe and easy to use Important for soft tissue growth Iodide is an important element required by invertebrates and many soft corals (gorgonians, sarcophytons, etc). Reef Iodide™...

Seachem Reef Fusion 2 500mL Provides 100,000 mg/L of ionic calcium Restores and maintains alkalinity Most concentrated two part system; simple 1:1 ratio Reef Fusion 1™ and Reef Fusion 2™ are the foundation of a system formulated to provide...

Seachem Reef Fusion 1 500mL Provides 100,000 mg/L of ionic calcium Restores and maintains alkalinity Most concentrated two part system; simple 1:1 ratio Reef Fusion 1™ and Reef Fusion 2™ are the foundation of a system formulated to provide...

Seachem Reef Complete 500mL Liquid ionic calcium source Most concentrated calcium supplement on the market (160,000 mg/L) 100% soluble. Be wary of products that are milky white or need to be shaken Reef Complete® is a concentrated (160,000 mg/L)...

Seachem Reef Complete 100mL Liquid ionic calcium source Most concentrated calcium supplement on the market (160,000 mg/L) 100% soluble. Be wary of products that are milky white or need to be shaken Reef Complete® is a concentrated (160,000 mg/L)...

Seachem Reef Calcium 500mL Liquid organic calcium source Maintains calcium and accelerates coral growth Concentrated (50,000 mg/L) Reef Calcium™ is a concentrated (50,000 mg/L) bioavailable polygluconate complexed calcium intended to maintain...

Seachem Reef Calcium 250mL Liquid organic calcium source Maintains calcium and accelerates coral growth Concentrated (50,000 mg/L) Reef Calcium™ is a concentrated (50,000 mg/L) bioavailable polygluconate complexed calcium intended to maintain...

Seachem Reef Builder 600g Raises carbonate alkalinity (KH) with minimal impact on pH A blend of carbonate sources that will not lower pH as competing bicarbonate only products can Will not deplete calcium, magnesium, or strontium Reef Builder™...

Seachem Reef Builder 300g Raises carbonate alkalinity (KH) with minimal impact on pH A blend of carbonate sources that will not lower pH as competing bicarbonate only products can Will not deplete calcium, magnesium, or strontium Reef Builder™...

Seachem Reef Builder 50g Raises carbonate alkalinity (KH) with minimal impact on pH A blend of carbonate sources that will not lower pH as competing bicarbonate only products can Will not deplete calcium, magnesium, or strontium Reef Builder™...

Seachem Reef Buffer 50g Raises pH to 8.3 Raises pH and carbonate alkalinity together pK (8.6) allows for greater pH stability in a reef system where the bioload is significantly more than in a fish only system When used as directed Reef Buffer™...

 Seachem Reef Advantage Calcium 250g Concentrated, powder ionic calcium Maintains magnesium and strontium Can be added directly to aquarium  Reef Advantage Calcium™ is a non-caustic (pH 8.3–8.6) optimized blend of ionic calcium...