The DT640 Utility Crawler outfitted with a custom-designed vacuum head from Deep Trekker can be used to remotely remove sediment from tanks or structures without draining. Users can hook their own vacuum system to the utility crawler vacuum head and see the HD video from the internal camera live on the hand-held controller. Users also have the option to switch to the elevated auxiliary camera for a better vantage point of the vacuum head. 519/342-3177; www.deeptrekker.com