
Quantum Reef Essential® SPS Macro Probiotic Salt™
This premium reef salt is specially formulated for SPS-dominated reef aquariums, blending modern synthetic salt purity with the complexity of South Australian natural seawater. Contains over 70 trace elements, beneficial macrobiotics, probiotics, and vitamin precursors to support vibrant coral health and overall reef vitality
Key Benefits & Features
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Tailored for SPS coral systems, providing balanced calcium (~405–420 ppm), alkalinity (7.4–7.7 dKH), magnesium (~1230–1280 ppm), and potassium (~375–390 ppm) at salinity 1.025–1.026 SG Crafted in a humidity-controlled lab environment for exceptional consistency and low impurity levels
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Includes natural macrobiotics, probiotics, and vitamin precursors to encourage microbial activity and enhance fish and coral vitality, phosphate- and nitrate-free
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Select your target specific gravity (1.025–1.026 recommended for SPS tanks), and review the corresponding parameters for calcium, magnesium, alkalinity, and potassium to align with your goals
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Plan a typical 10–20% weekly water change. For example:
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For a 200 L tank at SG 1.025 and a 10% change, mix about 34.6 g salt per liter (~692 g total)
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Use around 25 °C RO/DI water and dissolve salt gradually while stirring (using pump preferred). Once fully dissolved, stop mixing and allow temperature to stabilize before adding to tank. Always add salt to water, never vice versa
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After dissolving, seal unused salt in bag or bucket to maintain dryness and consistency
Why It’s Ideal for SPS Tanks
Quantum’s SPS Macro Probiotic Salt is engineered to support the higher demands of SPS corals—delivering the precise parameter targets needed for stable skeletal formation and vibrant growth. The inclusion of natural microbial enhancers helps maintain healthier microflora, supporting tank stability and vitality—without introducing unwanted nutrients like phosphate or nitrate
Sizes Available
Offered in 2.2 kg, 5.5 kg, 11 kg, 20 kg (box), and 22 kg (bucket) formats, suitable for frequent water changes or larger reef systems