Additives & Food Gallery

Porous biological filtration media for anaerobic bacteria. Removes nitrates through natural denitrification. Long-lasting and reusable. Ideal for canister filters or sumps.

Granular ferric oxide phosphate remover. Rapidly removes phosphates and silicates. Safe for all aquarium inhabitants. Does not release phosphates back into water. Use in filter media bag or reactor.

Powdered calcium supplement with trace elements. Contains calcium, magnesium, and strontium. Won't deplete alkalinity when used. Excellent for maintaining calcium in high-demand systems.

Concentrated magnesium blend. Contains both magnesium chloride and sulfate in the proper ratio found in natural seawater. Essential for proper calcium and alkalinity balance.

Raises pH to 8.3 and increases alkalinity.

Raises carbonate alkalinity without affecting pH.

Bioavailable polygluconate complexed calcium (50,000 mg/L).

Liquid carbonate/bicarbonate blend. Raises both calcium and alkalinity simultaneously in a 2:1 ratio. Ideal for systems using kalkwasser that need alkalinity boost.

Concentrated ionic calcium (160,000 mg/L) with magnesium and strontium.

Advanced ionic calcium supplement. Part of Seachem's Reef Fusion 2-part system. Contains calcium, magnesium, strontium, and other beneficial ions. Enhanced bioavailability formula.

Advanced alkalinity supplement. Part of Seachem's Reef Fusion 2-part system. Contains carbonates, bicarbonates, and other ionic compounds. Maintains pH while raising alkalinity.

Concentrated iodide (8,000 mg/L).