Kaku means “angular” in this Miroshaki Aquascaping Dictionary. An angular or squared shape. It helps describe where things sit in the layout and how the eye moves through the aquarium.
Japanese: 角 Romaji: Kaku
Meaning of Kaku
Kaku is explained here in simple English so beginners can use the word without feeling lost. In Miroshaki style, the term is not only a translation. It is a small way to look more carefully at nature underwater.
How Kaku Helps in Aquascaping
Use it for hard lines, stone edges and stronger visual direction. This can help when you choose stones, place wood, create open space, plant moss, or wait for the aquarium to grow into a more natural balance.