quadruple fugue: A fugue with four subjects. Quarter note: A note played for one quarter of the duration of a whole note. Quarter rest: A silence of the same duration as a quarter note. Quintal Harmony: Harmony based on the interval of a fifth, rather than thirds.
How To Treat Acid Well Water. On private water systems, one of the most common causes of pipe and fixture corrosion is from low pH, which can be defined as acidic water with a pH of less than 7.0 pH. Signs of acid water are corrosion of fixtures, blue staining (from copper pipes) or rust staining (from iron pipes).
In well water iron is usually found in a dissolved state and may appear clear when first drawn from the tap. The maximum amount recommended in water is 0.3 mg/L which is same as saying 0.3 Parts Per Million or PPM. When the level of iron in water exceeds the 0.3 mg/l limit, the water may have a red, brown, or yellow color and stain laundry and fixtures. The water may also have a metallic taste and an offensive odor.