Aqua One Reef Skim 300 Protein Skimmer 800Lh Aqua One Reef Skim Protein Skimmers are designed by Aqua One Reef Skim Protein Skimmers are designed to easily and effectively remove organic waste from aquarium water. The needle wheel impeller increases the contact area maximising efficiency. Simple ,accurate control allows you to adjust the output quickly and easily. The result is cleaner, clearer water and healthier aquarium inhabitants. Features & Benefits: Needle wheel impeller reduces the bubble size which creates higher surface area for collection of organic waste Energy efficient with lower power consumption Effectively removes organic waste Easy and accurate flow adjustment Small footprint leaving plenty of room for other equipment in the sump Integrated skim mate drain allowing you to drain waste directly into a separate container Available in 2 sizes.