Cloudy water

ESKEW

in regards to cloudy water, my tank is recently cycled but the water still isn't crystal clear which I would like it to be. is this because 1. the tank is so large it is giving the illusion of a cloudy distance or 2. the water parameters i.e. the fact that the GH is on the higher side for drift lakes.
Should I consider using a water polishing filter for a few hours in place of the bio sleve and carbon in my filter.