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Terra Aquatica Tripack Dual Part HW
Terra Aquatica TriPack DualPart Hard Water is a complete starter kit of three 500 ml bottles for hard water such as Belgian tap water. Contains DualPart Grow Hard Water formerly FloraDuo Grow HW for the growth phase, DualPart Bloom formerly FloraDuo Bloom for the flowering phase and FinalPart with PK 6-5 for the final ten days of ripening. Includes a 25 gram sachet of pH-Down powder. The 2-part system designed by NASA chemist Cal Hermann contains bio-activators that improve plant resistance and reduce internode length without synthetic PGR growth regulators. Maximum dosage just 5 ml per litre. Choose this version for water containing more than 70 mg per litre calcium.
Terra Aquatica TriPack DualPart Hard Water – Complete 2-part system for Belgian tap water
The TriPack DualPart Hard Water — formerly the GHE FloraDuo starter kit — is the ideal choice for growers in Belgium where tap water typically contains more than 70 mg/L calcium. This pack combines the powerful 2-part nutrient system from Terra Aquatica with the FinalPart ripening solution. Designed by NASA chemist Cal Hermann as a simplification of TriPart with the same performance and unique benefits.
What is included?
- DualPart Grow Hard Water 500 ml — formerly FloraDuo Grow HW: stimulates structural and vegetative growth with bio-activators that improve plant resistance and reduce internode length without synthetic PGRs. Formulated with reduced calcium for optimal balance with hard water.
- DualPart Bloom 500 ml — formerly FloraDuo Bloom: delivers phosphorus and potassium for maximum root formation, flowering and fruit production. Universal for all water types.
- FinalPart 500 ml (PK 6-5): the ripening solution for the final ten days that accelerates ripening and increases active compound production.
- pH-Down powder (25 g): dry pH correction agent for immediate adjustment.
Why Hard Water for Belgium?
Most Belgian tap water contains more than 70 mg/L calcium. The Hard Water version of DualPart Grow compensates by adding less calcium, preventing lockout and deficiency problems. The result: a perfectly balanced nutrient solution that works in synergy with your local water quality.
Two bottles from start to finish
With DualPart, you need just two bottles for the entire cycle — not four like classic A+B systems. Start with equal amounts at rooting, more Grow in vegetative phase, more Bloom in flowering. Maximum dosage is just 5 ml/L.
Dosage by growth phase
- Rooting: 1 ml/L Grow + 1 ml/L Bloom.
- Vegetative growth: 2.5 ml/L Grow + 1.5 ml/L Bloom.
- Pre-flowering: 1.5 ml/L Grow + 2.5 ml/L Bloom.
- Full flowering: 0.5 ml/L Grow + 3.5 ml/L Bloom.
- Final 10 days: FinalPart only at 3–6 ml/L (included in this pack).
Using reverse osmosis or soft water? Choose the TriPack DualPart Soft Water instead.
Order from plantandflower.be with fast shipping across Belgium.
Is Belgian tap water hard enough for the Hard Water version?
Yes, most Belgian tap water is moderately hard to hard, typically above 70 mg/L calcium. In Brussels, Antwerp, Ghent and most cities, the Hard Water version is the correct choice. If in doubt, measure your EC: above 0.4 mS/cm you likely have hard water.
What is the difference compared to the TriPack DualPart Coco?
The TriPack DualPart (HW/SW) is a universal 2-part system suitable for hydro, soil and coco. The TriPack DualPart Coco is specifically formulated for coco coir substrate with extra calcium and magnesium. If growing exclusively on coco, DualPart Coco is the optimised choice. For other substrates, choose DualPart HW or SW.
Is FinalPart included in this TriPack?
Yes, FinalPart is included in the TriPack DualPart. This is an advantage over the TriPack TriPart where FinalPart must be purchased separately. You have a truly complete package from seedling to ripening.
