DWC air pump tubing valve wrong size help!!

Hey everyone just about to start my first dwc.
After my air pump, air stones and tubing arrived i notice that the tubes dont fit the air stones.. stones are 5-7mm connectors and the tubing and pumps are 10mm.
Does anyone know if you can get airstone to fit 10mm or a connecter valve to fit 10mm tube to airstone?

also i have 3 airstones.. 2 small ones and a 30cm bar with the same size adapter.
also.... where can you get 10mm V or Y water pump tube splitters?

anyhelp is appreciated.

pet store will have all kinds of stuff for air pumps

Thanks mate I just pissed the air stones off. Duct taped the end of the tube shut and put heaps of holes in the ending of the tube Untill I get to a store.