Collection: Seachem Additives

How the Seachem range is split

• Freshwater & Planted – Flourish and its single-nutrient bottles, Flourish Excel, Flourish Tabs, and buffers for pH and general hardness.
• Specialized & Problem Solvers – Prime, Safe, Stability, Pristine, Clarity and AmGuard, plus Reef Nitrogen and Reef Phosphorus for reefs running too low on nitrate and phosphate.
• Major Elements – Reef Builder, Reef Carbonate, Reef Calcium, Reef Advantage Calcium and Magnesium, and the marine pH buffers.
• Trace Elements – Reef Trace, Reef Potassium and Reef Iron.

Liquid or powder

Many Seachem supplements come in both forms. Liquids such as Reef Calcium and Reef Carbonate are easy to measure in small doses and suit dosing pumps. Powders such as Reef Builder and Reef Advantage Calcium are dissolved before dosing and suit larger systems that need bigger doses.

Picking a size

Prime, Stability and Flourish Excel all come in 2 and 4 litre sizes for multi-tank setups and large water changes. Start with a small bottle while you settle on a dose, then move to the bigger size once it is part of your routine.