It wont work as a true python does as there is no valve on the DIY system to cause the suction. The Pythons have a 'valve' on the end that goes on the tap so that as the water from the tap passes round it it causes suction up the hose - it is not a simple T or Y connector that they use. This is the whole point to the Python, to suck water out of the tank... the DIY ones will allow you to remove water using normal syphon method and refill from a tap. not suck the water out. Hope that helps.