ASM In-sump protein skimmer is amazingly easy to install and maintain - just place it in your sump and plug it in; with the Included Sedra Pump and needle-wheel technology, the skimmer body is made from a durable extruded material with no-leak snap lock design and removable body top for easy maintenance. The ASM skimmer has a 90 day warranty, and the pump has a 2 year warranty against defects in workmanship or materials. These skimmers ASM G-1 Protein skimmer, ASM G-1X Protein skimmer, ASM G-2 Protein skimmer, ASM G-3 Protein skimmer, ASM G-4X Protein skimmer, ASM G-5 Protein skimmer, is a powerful and efficient protein skimmer.