The VCA MJ Crevice Tool allows you to turn your utility pump into a precise crevice vacuum, making it easy to clean hard-to-reach areas in your aquarium, including tight corners and spaces between frags. Compatible with SICCE® Syncra Nano pumps via the included snap-in adapter, as well as Marineland and Cobalt Aquatics MJ series pumps (MJ600–MJ1200), this tool is a versatile addition for reef tank maintenance. It also works with any hose with a 3/4” outer diameter and is 3D printed in reef-safe PETG.