The patented CapillaryFlow system manages water and air beneath the arena, creating a reliable, high-performance riding surface in all weather conditions.
One system for sand and grass arenas. Suitable for indoor and outdoor sand arenas, and subsurface irrigation for grass arenas.
Even moisture and fast drainage in indoor and outdoor sand arenas, with no fibres needed.
Hydroponically grown grass in equestrian sand, watered from below. No mud when it rains.
How watering from below compares with sprinklers and other arena watering methods.





Even moisture from below. No overhead sprinklers and less dust in the air.

Half of the underground system is always free of water, ready to take heavy rainfall.

Optional drip lines give faster moisture adjustment on heavily used show-jumping arenas.

Fanø, Denmark

Ireland

Forget Me Not Farm, Wellington, USA

Athens, Greece
Half of the underground system is always free of water. Heavy rain drains through the sand into that space, so no water stands on the surface.
Water is supplied from below, so less time goes on watering the arena and more on riding it.
With the Capillary Wash Box the sand can be washed in place, and replaced after many years without replacing the system underneath.
With correctly analysed sand and full control of moisture, the footing stays firm and even without fibre additives.
Water and air keep moving beneath the surface, so water does not sit in the base and turn it black.
FlowTrack shows the moisture in your arena so you can set the level that suits your discipline.
1,500+ installations in 50+ countries

15 year performance guarantee
Lower environmental impact
Better for people & animals
CapillaryFlow started as golf bunker drainage and is now engineered for equestrian arenas. More than 1,500 installations in over 50 countries.
“The moisture is always exact, and I feel it immediately on the horses when I ride on Capillary compared to another arena.”
Christer Egerström, Olympic dressage rider and trainer
“What I love the most about it is that the footing is always even, moist and consistent and the time spent on maintenance is so much less.”
Codi Harrison, International dressage rider
Yes. Water is delivered beneath the footing, so nothing is sprayed into the arena air. Evenly moist sand also keeps dust down. Good ventilation is still needed to manage humidity.
Yes. The same system works under sand arenas and under hydroponic grass arenas, where the grass grows directly in equestrian sand.
Half of the underground system is always free of water. Excess rain drains through the sand into that capacity, so there is no standing water on the surface.
Water is retained and recirculated beneath the surface. Savings can reach up to 75% compared with overwatered arenas, depending on climate, arena use and previous watering practices.
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