ARKA Reef Salt for Marine Aquariums – ARKA Organic Active Salt 20 kg – with organic activators for coral colour & growth – phosphate-free & fast dissolving – stabilises water values – ideal for SPS, LPS

Organically activated reef salt – supports coral colouration & growth with natural bioactive elements – designed for SPS, LPS & soft corals – ideal for biologically balanced reef tanks

Rich in calcium, magnesium & strontium – promotes healthy tissue & skeleton development – long-lasting polyp extension & vibrant colours – ideal for demanding reef environments

Dissolves quickly & cleanly in RO water – 37 g per 1 L for 1.022 SG – delivers stable values: pH 8.3–8.5, KH 8–10, Ca 450 mg/L, Mg 1380 mg/L, Sr 8.1 mg/L – no residue, no waiting

Free from phosphate & nitrate – supports long-term stability & algae prevention – safe for sensitive coral species – no unwanted nutrients or clouding

Trusted by reef experts – ARKA Organic Active Salt offers professional-grade consistency – developed for modern reefkeeping with natural formulation – available in 1 kg, 10 kg & 20 kg formats