29.6cc Long Handle Measuring Scoop (2 Tablespoon / 1/8 Cup / 1 oz) - Heavy-Duty Plastic Spoon for Powders, Protein, Coffee, and Baking, 1-Pack

I have crunchy water and use Tide Ultra Oxi powder, too. I have a 2 tablespoon scoop that I use for detergent. I use 1 scoop for small loads, 2 scoops for medium and 3 scoops for large. I often add a scoop of Febu for extra dirty stuff too. I get trace suds on my washer door glass.