Dotolo / Aquanet Closed System.

A sterile, single-use speculum is inserted and connects to medical-grade closed-loop tubing. The Dotolo/Aquanet unit regulates water temperature, pressure, and flow, and passes waste through a clear viewing tube where the practitioner can observe it in real time. Pressure is held within physiological safety limits (typically under 2 psi), and the session consists of controlled fill-and-release cycles managed by the practitioner rather than the client.

Dotolo's EC-2000 has been the industry-reference closed-system device for over two decades. It is taught in I-ACT certification courses, maintained by a well-established supply chain, and familiar to most practicing closed-system colon hydrotherapists. A clinic that advertises 'closed system colonic' is almost always using a Dotolo, an Aquanet (essentially the same device under a different brand), or a direct competitor that works on the same protocol.

Dotolo devices are more common in clinical settings than open systems. Naturopathic offices, functional medicine practices, and integrative medicine clinics that offer colonic hydrotherapy almost universally use closed systems. Wellness-boutique clinics are split. The closed system's clinical framing and real-time observation make it the default in medically-supervised contexts.

45 to 60 minutes of hydrotherapy, 90 to 120 minute full appointment. Closed-system sessions are more practitioner-intensive, so intake and post-session debrief tend to run longer. This is where the 'clinical-style' experience comes from — not the device itself but the practitioner's continuous engagement throughout.

$100 to $200 per session in US cities, with clinical settings at the high end. Pricing reflects the practitioner's continuous presence, the higher device cost, and the often-longer appointment window. Package pricing follows open-system patterns: three- and six-session packs at 10 to 20 percent off single rate.

Is the device a Dotolo or Aquanet, and what generation? Are specula single-use and individually packaged? What is your cleaning protocol between clients, and how often is the device serviced by the manufacturer? Are you I-ACT certified at the intermediate or advanced level (closed systems usually require advanced training for competent use)?