amount of water used in washing cycle is +/- same, not dependent on size of load. reducing amount of powder will create weaker concentration and reduce cleaning capabilities of machine/detergent.
in reality, reducing amount of powder won't change much most of the time, because majority of cleaning happens due to physical action of (hot) water. there were multiple times when I was forgetting to put detergent and dishes went out clean. it mostly makes difference for some very dry/backed on stuff.
in reality, reducing amount of powder won't change much most of the time, because majority of cleaning happens due to physical action of (hot) water. there were multiple times when I was forgetting to put detergent and dishes went out clean. it mostly makes difference for some very dry/backed on stuff.