Hi everybody,i am starting a window cleaning business here in Aus,having moved from UK 9 months ago,i am new to the game and i have been at it a week,i don't know about Uk but here we get a lot of lime in the water which leaves nasty marks on the pane i have been told to use hydrochloric acid in my water although how much i am not sure,also it seems to take me too long to do a window,i wash with my washing implement then squeegie top to bottom then wipe round the edges,but i get a lot of residue which i have to keep wiping,as my cloth seems to drag water around instead of drying and shining,could someone please give me some quality tips on the ins and outs of cleaning for a novice,any advice much appreciated.