A motorless reactor may include a base member, a tubular container, an inlet and an outlet, a pipe, and a head member. The tubular container may define a longitudinal axis extending between an upper end and a lower end, the lower end of the tubular container being coupled to the base member. The inlet and the outlet may be disposed proximate the upper end of the tubular container. The inlet may be configured to receive a pressurized flow of water from a reservoir, and the outlet may be configured to output a mixture of water and a predetermined substance. The pipe may be coupled to the inlet and may extend substantially parallel to the longitudinal axis from a first end proximate the upper end of the tubular container toward a second end proximate the base member.