Hydrogen nano-bubble technology, explained

Hydrogen Nano-bubble Technology in Irrigation & Water Treatment

A nanobubble is a gas bubble small enough — typically well under one micron — that buoyancy no longer governs its behaviour. Instead of rising and venting like the coarse bubbles of conventional aeration, nanobubbles stay dispersed throughout the water column, held in suspension by surface charge. That dispersion is what distinguishes a nanobubble generator from a diffuser: the gas is carried with the water, through the pump, the filter bank, the mains and the emitters, rather than escaping at the point of injection. Nano-bubble stability, nano-bubble density and nano-bubble retention are the three properties that decide whether a nanobubble process survives a full irrigation cycle.

The established use of nanobubble technology in horticulture and water treatment is oxygen, air or ozone. Oxygen and air nanobubbles are used for water oxygenation and root-zone oxygenation — lifting dissolved oxygen in recirculating nutrient solution, tanks and reservoirs, and in aquaculture oxygenation. Ozone nanobubbles are used for water remediation and irrigation water treatment, where an oxidant is the objective. These are gas-delivery duties: the gas is consumed, oxidises, or off-gasses, and the effect ends with it.

HERO Irrigation works on the advanced modality — molecular hydrogen delivered by nano-bubble infusion. Hydrogen is the smallest molecule, so it disperses further and holds longer in suspension than the heavier gases used in oxygen or air systems, and it is not an oxidant: it does not scavenge, bleach or react with nutrient chemistry. Hydrogen is delivered by inline nano-bubble injection on a pressurised main — pump-inline dosing with no tank, no storage vessel and no change to driplines, emitters, dosing or the climate computer — and travels as dissolved hydrogen at 3,000–5,000 ppb (sensor-verified; 2,000–4,000 ppb by methylene-blue titration) to the root zone. This is why hydrogen nano-bubble water activation is specified in glasshouses, nurseries, vineyards, turf, hydroponics and vertical farming, where the irrigation line is the only reliable route to every root zone in the block. On evidence: the strongest documentation is instrumented — hydrogen concentration, purity, output and in-line stability are measured and certified. Grower-reported crop and turf outcomes across deployed sites are moderate, observational evidence. Long-horizon, multi-season yield modelling remains an open gap, and YBG Global states it as one rather than filling it with claims.

Lower input costs, not just higher yield

Field data on hydrogen-rich water irrigation points to a second, independently significant benefit alongside yield: a real reduction in fertiliser dependency.

In open-field trials across Shandong and Hebei, China, growers using electrolytic nanobubble hydrogen-locking irrigation reduced chemical fertiliser and pesticide consumption by more than 30%, alongside a 12–25% yield increase and measurable improvement in soil acidification and hardening.

A separate, peer-reviewed two-year cherry tomato trial (Li et al., 2024, Plants) found something sharper still: hydrogen nanobubble water applied without any fertiliser at all produced higher yield, sugar–acid ratio, and lycopene content than a conventional fertiliser-only control group. In other words, the hydrogen treatment didn't just reduce how much fertiliser was needed — in this trial, it outperformed fertiliser entirely.

For growers facing rising input costs, this points to hydrogen-rich irrigation as a genuine input-cost lever, not only a yield or quality improvement.

Read the full case study: can hydrogen-rich irrigation reduce fertiliser use? →

Contaminated and marginal soils — a different question entirely

Alongside the yield and fertiliser-input work, a separate line of peer-reviewed research looks at something unrelated to input economics: how crops cope when the soil itself is contaminated with heavy metals. This is its own use case, and nothing in it supports or extends the fertiliser-reduction findings above.

A 2025 study in Environmental Pollution (Guo et al., 2025) grew water spinach in cadmium-contaminated soil under drip irrigation, comparing micro-nano bubble hydrogen water against tap water. The authors report — qualitatively, with no percentage figures given — improved yield, plant height and root development, higher chlorophyll content and photosynthetic rate, increased stress-response compounds associated with reduced cadmium uptake, and measurably improved rhizosphere soil with a restructured microbial community linked to lower cadmium bioavailability.

Read as a signal, not a specification: hydrogen-rich irrigation research also shows promise for crops grown on heavy-metal-contaminated or otherwise marginal soils. This citation is at abstract level — the full paper is paywalled and has not been independently read in full by us. No remediation, food-safety or contaminant-removal claim is made, and no figure is attached to this finding.

Nano-bubble technology — FAQ