There is a lot of white smoke coming from my.

There is a lot of white smoke coming from my exhaust pipe especially when I either have radiators full blown or when I accelerate. I have checked my oil and to me it looks ok but my coolant is a brown colour (dirty water) it isn't looking like a mousse or it doesn't bubble when engine started. There is some water coming out of the tailpipe and it looks like one of the hoses from the coolant has became lose. I have been told it might be a blown gasket, any ideas