you can buy de-ionised water from many places, including halfords, its cheap and is peeeerfect for magura rim brakes! oh, and use syringes to bleed, but do it properly, i seem to be able to get a better bleed with that method when compared to using the 'bucket' method. also lads, a good way to get out any air from the actual water itself, its to use the method of degasification! just pull back the plunger of your syringe whilst you put your finger over the top of the syringe, you will see the air come from the water and rise to the top. this means that any air that would have been in there, will be out. as a result of this your maggie internals wont corrode as quickly! degasification