Aquascape Spillway Bowl with Stand · 16 in is a Aquascape-branded product in the ownkoi catalog. Cast-resin spillway bowl with matched stand from Aquascape. Pumped water fills the bowl and overflows into the pond, providing both decorative and surface-aeration effect. Specifications and pricing reflect the manufacturer-published or retailer-published data at the most recent catalog refresh. Verify the live listing on the source retailer page before purchase.