Turn a Utility Pump Into a Crevice Vacuum Tool Compatible with NEWA MP, Sicce Syncra Nano, Marineland and Cobalt Aquatics Maxi-Jet Pumps Works with the MJ600 to MJ1200 Can be used with any hose with a 3/4in OD (outer diameter) 3D Printed in reef-safe PETG Turn a spare MJ Pump Into a Detritus Vacuum Take your ordinary MJ Utility pump and add this 3D-printed vacuum attachment for the ultimate cleaning tool for tight spots, crevices or between frags in your grow-out systems. Compatible with 3/4in OD hose Add the vacuum attachment to any hose with a 3/4in OD and breeze through your next water change. Not just for the MJ Pump! The MJV will also fit many other pumps such as the EHEIM CompactON 300 pump, Sicce Syncra Nano, NEWA MP. All that is requires is an inlet with a 3/4in (19.14mm) outer diameter