It doesn't make a whole lot of sense to replace your dirty, old filter with a squeaky-clean new one, only to send water through an equally as tired and grimy hose. So, while you're at it, consider replacing your hose with the MSR MiniWorks/WaterWorks Replacement Hose. This silicone hose is compatible with MiniWorks and WaterWorks filters, and attaches easily to the inlet hose on either filter.