The Snorkel™ Vault is used as a way to access the centipede during clean outs. The Snorkel™ Vault is completely buried into the gravel with only the lid being exposed. A pump can also be housed in the Snorkel™ Vault if building a "pondless" waterfall. snvacapOur Price: $699.99Sale price: Snorkel™ Vault Extension Extend the depth of your pondless basin Screws onto top of Snorkel™ Vault Has hoetails set up for 2" or 3" plumbing snvaexOur Price: $299.99Sale price: Most Orders Shipped Out Same Day! Premier Ponds LLC pondinfo@premierponds.com U.S.A. Copyright © 1999 - 2007 Premier Ponds LLC, North Salem, New York. All rights reserved. Thermo-Pond Heater 3.0, Aquascape Designs Pond Kits, ScareCrow Sprinkler, Nursery Pro Micro Pond Kits, AquaClearer, Microbe-Lift, Great Blue Heron Decoy, Pond Liners, Thermo Pond Heater & Deicer, Premium Koi Food, Select Koi, Butterfly Koi, Pond Aeration Pumps, Flexible PVC Piping, BioFalls, Skimmer, Aquascape Pumps, Cat Stop!, Animal Control Products, Pond Netting.