CHEMISTRY

Test & treat with precision

PhoX phosphate remover and alkalinity reagent for reef & marine aquariums.

Products

Liquid tools for phosphate knockdown and reliable alkalinity testing — built to sit next to your controller charts and dosing routine.

Alkalinity Reagent

Chemistry

Alkalinity Reagent

Precision reagent for reliable dKH testing Nereus Alkalinity Reagent is formulated for the Nereus Alkalinity Checker and compatible color…

PhoX

Chemistry

PhoX

Nereus PhoX is a lanthanum chloride liquid phosphate remover. Simple rule: 2.2 ml lowers about 0.1 ppm PO₄ in 100 L — dose slowly into a…