So many things go into making a great cup of tea. Temperature, timing, tea quality and lets not forget the water.
Tea connoisseurs agree that water quality is as critical as tea quality. Hard water can create a film that floats in the cup or pot due to flavanoids in tea reacting with Calcium Hydroxide in hard water. Several experts believe that hard water is simply unsuitable for tea. For example, ice tea made with hard water will turn cloudy upon cooling.
Soft water makes stronger better tea with none of the floaties plus it will keep your teapot and cups clean. Great News.
Do not forget the biscuits.