The Koi Dome from Velda has been a big hit with our customers recording 100% feedback correct as at 21052015.How it worksSimply placing the dome in your pond then invert it whilst it is underwater.Once the Dome returns to the surface the water collected inside the unit whilst the Dome was underwater stays as a 'bubble' projected above the surface of your pond.Your fish can swim into this 'bubble' especially if tempted by some carefully positioned treats and you will see them appear above the surface of the pond.