Description
Shogun Samurai Hydro Bloom for Hard Water is a two-part professional hydroponic flowering base nutrient from Shogun Fertilisers, formulated specifically for use with hard water sources. We have been recommending Shogun Fertilisers to UK hydroponic growers since 2017 as a premium, British-developed nutrient brand that combines SmartZen technology with precise mineral formulation to deliver outstanding bloom performance in UK growing environments.
SmartZen Technology in a Hard Water Bloom Formulation
Shogun Samurai Hydro Bloom for Hard Water is built around Shogun’s proprietary SmartZen additive — a complex of amino acids, fulvic acids and plant biostimulants that is incorporated directly into the base nutrient formulation rather than sold as a separate additive. SmartZen improves mineral chelation and bioavailability at the root zone level, enhances photosynthesis efficiency, and supports the production of secondary metabolites including terpenes and essential oils during flowering — benefits that translate to improved harvest quality as well as yield weight.
The hard water formulation accounts for the elevated calcium and magnesium background in UK hard water areas, calibrating the bloom N-P-K and secondary mineral ratio to deliver correctly proportioned nutrition when mixed with hard tap water. This matched formulation prevents the calcium excess and associated potassium lockout that affects growers using non-matched products in hard water regions.
Application and Shogun Programme
Mix Parts A and B in equal ratio at the manufacturer’s recommended rate. Adjust to hydroponic target pH (5.8–6.2) before applying. Use from the start of flowering through to one week before harvest flush. Pair with Shogun Silicon through mid-bloom and transition to Shogun Dragon Force finisher in the final weeks for a complete Shogun bloom programme.
Compatible with the full Shogun additive range including Sumo Boost, Dragon Force and Silicon. An excellent foundation bloom nutrient for UK hard-water hydroponic growers who want the combined benefits of SmartZen technology and a correctly matched water formulation.







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