Titan Glass Gleam 4 aka GG4 is designed to work well with hard water.

Stays wet longer on hot or windy days.

Does not foam up.

Superb wetting and rinsing for water-fed poles.

No phosphates, ammonia, or hazardous chemicals.

Leaves no haze, even on polymer treated surfaces.

Blue color indicator when diluted.

Biodegradable.

1/4 ounce per gallon of water.

5 Gallon Pail.