lain

Following the Eight House Theory, North-West is my excellent sector, North-East is my health sector. My house has an L-shape, with the front side along and the front door facing SE, the right side and the bedrooms facing NE. I would like to fill the missing corner North-West with a sun-room. Is there any restriction on sun-room addition? Can I extend my living room into the sun-room and add a small fountain? or a fish tank? Thanx