Reef Zlements Z Complete – Part 1 (2.5L)
Reef Zlements Z Complete Part 1 is a high-performance alkalinity supplement formulated to work in harmony with Part 2 as part of the Z Complete two-part dosing system. Designed for serious reef keepers, this solution provides a highly concentrated source of alkalinity—delivering 10 dKH per litre—making it easy to maintain stable carbonate hardness and promote optimal pH levels in your marine system.
When dosed correctly, Part 1 supports coral skeletal development, enhances calcification, and helps stabilize the water’s buffering capacity—crucial for sustaining healthy SPS, LPS, and mixed reef aquariums. It also includes a carefully balanced blend of trace elements that contribute to overall coral vitality and coloration, while ensuring ionic balance within the system.
Produced in the UK to rigorous quality standards, Z Complete Part 1 is lab-tested for consistency and purity. It’s ideal for both manual dosing and automated systems, and its eco-conscious packaging reflects Reef Zlements’ commitment to sustainability.
Key Features:
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Provides 10 dKH of alkalinity per litre
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Raises alkalinity: 10 mL per 100 L = +1 dKH
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Stabilises pH and buffering capacity
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Supports coral growth, calcification, and colour
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Contains a balanced blend of trace elements
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Ionically balanced to work seamlessly with Part 2
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Ideal for SPS, LPS, and mixed reef aquariums
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Manufactured in the UK with eco-friendly packaging
Recommended Use:
Use with Z Complete Part 2 for full calcium and alkalinity supplementation. Begin dosing based on your tank’s daily alkalinity consumption and adjust based on regular water parameter testing. Split daily doses into smaller amounts if using automated dosing systems for best results.
Volume: 2.5 Litres
Use with: Z Complete Part 2 (Calcium & Trace Elements)
Best for: Reef aquariums with pH ≤ 8.15





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