The Reef Octopus Classic 150INT is a high-performance internal protein skimmer designed to maintain pristine water quality in saltwater reef aquariums. Utilizing advanced venturi technology, this device efficiently removes dissolved organic compounds before they break down into harmful nitrates and phosphates, ensuring a stable and healthy environment for sensitive corals and marine life.

This unit features a compact internal design that fits neatly inside the sump or display tank while delivering robust skimming performance through its durable acrylic construction. The Classic 150INT includes an adjustable intake valve to fine-tune bubble contact time, a collection cup with a clear viewing window for easy monitoring, and a powerful pump optimized for maximum efficiency without excessive noise or vibration.

Ideal for intermediate to advanced reef keepers maintaining tanks ranging from 30 to 75 gallons, this skimmer offers the reliability needed for long-term success. Whether you are running a fish-only system with live rock or a complex mixed-reef tank, the Classic 150INT provides essential export of waste to support vibrant coral growth and crystal-clear water conditions.