Collection: Seachem Laboratories

Few brands cover as much ground as Seachem — the same shelf handles a planted tank's fertilizer routine, a new tank's cycle, and a reef's trace elements. Stocked here: Prime and Stability for water conditioning and biological filtration, sized from 100ml up to 4 liters; the Flourish planted range including Excel, Iron, Potassium, Phosphorus and root Tabs; Equilibrium and Alkaline Buffer for freshwater mineral and pH control; and marine items such as Reef Trace and Reef Kalkwasser. These are concentrates; measure the dose rather than estimating it.