iwagumi what is
The Iwagumi term itself comes from the Japanese ârock formationâ and it refers therefore to a layout where stones play the leading role. Rocks provide the âbonyâ structure of the aquascape and the traditional geography is a design made of three main stones, out of which one large headstone and two small others.he most difficult task when it comes to the Iwagumi aquascaping style is to obtain that harmony and unity through simplicity. The Iwagumi is not about just collecting a number of stones but about placing them in a fluent, natural and spacious way so that they are related both to each other and the rest of the scape.