the present invention is a device that aerates lawn or soil using a unique triangular shaped tine or spike . the spikes are arranged on drums in a pattern . the drums can be filled with a fluid such as water or a granular material such as sand to adjust the depth to which the spikes penetrate . the drums may be angled with respect to the direction of travel to impart a transverse movement to the soil . the triangular shape of the spikes and the transverse movement greatly enhances the degree of aeration and results in significantly better aeration compared to using round spikes and coring devices . the surface is not cluttered with cored debris , so the present invention can be used on playing fields or lawns where post aeration appearance is important .