ARKA Premium Reef Salt - 15 kg sea salt for optimal coral care in saltwater aquariums, quickly dissolves, supports long-term coral growth and health.

High-purity synthetic reef salt for marine aquariums - fast dissolving & residue-free - designed for optimal coral care, stable parameters & vivid colours - trusted by reefers, beginners & pros alike. Ideal calcium-magnesium-strontium balance for coral skeleton formation, polyp extension & colour intensity - supports LPS, SPS & soft corals with lasting reef health & resilience. Precise values: 37 g/l = 1.022 SG - pH 8.3-8.5 - KH 8-10 - Ca 430 mg/l - Mg 1300 mg/l - perfect for RO water use - no organics, no heavy metals, no unwanted residues. Lab-tested quality by ARKA - long-term reef performance with consistent batches - trusted by aquascapers, coral breeders & advanced hobbyists - for safe & successful marine aquarium keeping. Lab-tested quality by ARKA - long-term reef performance with consistent batches - trusted by aquascapers, coral breeders & advanced hobbyists - for safe & successful marine aquarium keeping.