The Aquascape Wetland Filtration system has a separate chamber from the main pond, where the Centipede modules are located at the bottom. The AquaBlox is placed on top of the Centipedes to create void space and prevent large debris from blocking the Centipedes. The Snorkel wetland vaults are also connected to the Centipedes to allow easy access for maintenance and cleaning in the future. A ton of stones is back-filled on the Centipedes, starting with a layer of large (5") stones, followed by a layer of medium (2" to 3") stones, and finally a layer of gravel (¾" to 1"). When water is pumped into the Centipedes from the main pond, the dirty water is pushed up through these layers of gravel, which filters the sediment and excess nutrients mechanically and biologically. The clean water then emerges at the surface of the wetland filter chamber, before being returned to the pond through gravity.
 
This system uses stones, which provide a large surface area for healthy bacteria to thrive. The wetland filtration system is customizable to meet the requirements of each project. It can filter large ponds with big fish stocks.
 
Aquascape Large Snorkel Wetland Vaults are designed to be connected to the Centipede module(s) and allow access to the bottom of the wetland filtration bed for routine maintenance and cleaning. Wetland Filtration systems capture sediment, which is broken down by bacteria (organic sediment) or falls to the bottom of the filter bed (inorganic sediment) where it will collect within the centipedes.
 
The inorganic sediment, which usually consists of fine sand or clay, requires physical removal to prevent it building up over time and restricting water flow. The Snorkel vaults allow a solids handling pump and pipework to be lowered down into the Centipedes to clear this built-up debris. They feature one open outlet as standard, but up to four Centipedes can be connected to the same Snorkel if required, simply by sawing off the molded caps.
 
Extension pieces are also available and can be placed atop the main Snorkel to increase the total height of the vault. The original lid from the Snorkel also fits perfectly with the extension pieces.
 
Aquascape Large Snorkel wetland vault extension
Diameter 355mm; Height 700mm