a question here, maby a newb question but i have to ask, does the 46.5CM glass bong from your website come "ready to go" or do i need to buy a bowl seperately for it? My first Bong here, not quite sure. Also is the slide removeable?? or does it have a carb? i cant tell from the picture. Also does your bong capable of haveing a diffuser? if so what are the width and length of the bowl that comes with the bong (or does it). Thank you