Method for separating seeds in an arrangement for an agricultural seed drill, with - feeding seeds by means of a pressurized fluid flow via a feed line, which couples to a feeder; - collecting the seeds received via the feeder in a collection space; - delivering the seeds from the collection space to a separating device, which is arranged in a housing of a seed meter; - separating the seeds by means of the separating device in the housing in an overpressure environment formed in the housing; - spreading the separated seeds via an outlet of the housing; and - overflowing a partial flow of the pressurized fluid flow via an overflow device in the area of a section of a wall, which delimits a filling area of the collection space, into a bypass channel, which is formed separately from the collection space, and from there into the housing such that the overpressure environment in the housing is supported, wherein the overflow occurs free from overflow of the seeds; wherein the seeds are fed to the collection space in a self-regulating manner, wherein in this case - an overflow area of the overflow device, through which the partial flow of the pressurized fluid flow overflows into the bypass channel, is at least partially blocked by the seeds in the filling area of the collection space, wherein the partial flow overflowing into the bypass channel is the smaller, the larger the partial area blocked by the overflow area is; - due to the partially blocked overflow area, the pressure for the seeds in the collection space increases, whereby the pressurized fluid flow decreases, causing fewer seeds to be fed to the collection space; and - the blocking of the overflow area is reduced by the seeds because the fill level in the filling area of the collection space decreases such that a larger partial flow reaches the bypass channel, whereby the pressure in the collection space decreases, which then triggers an increase in the seed feed by means of the pressurized fluid flow; characterized in that the bypass channel is connected to a fluid outlet, which can be opened and closed such that in addition to the overflow of the partial flow into the bypass channel, at least part of the overflowing fluid flow can be discharged to the outside such that the partial quantity introduced into the housing of the seed meter is reduced. - feeding seeds by means of a pressurized fluid flow via a feed line, which couples to a feeder; - collecting the seeds received via the feeder in a collection space; - delivering the seeds from the collection space to a separating device, which is arranged in a housing of a seed meter; - separating the seeds by means of the separating device in the housing in an overpressure environment formed in the housing; - spreading the separated seeds via an outlet of the housing; and - overflowing a partial flow of the pressurized fluid flow via an overflow device in the area of a section of a wall, which delimits a filling area of the collection space, into a bypass channel, which is formed separately from the collection space, and from there into the housing such that the overpressure environment in the housing is supported, wherein the overflow occurs free from overflow of the seeds; - an overflow area of the overflow device, through which the partial flow of the pressurized fluid flow overflows into the bypass channel, is at least partially blocked by the seeds in the filling area of the collection space, wherein the partial flow overflowing into the bypass channel is the smaller, the larger the partial area blocked by the overflow area is; - due to the partially blocked overflow area, the pressure for the seeds in the collection space increases, whereby the pressurized fluid flow decreases, causing fewer seeds to be fed to the collection space; and - the blocking of the overflow area is reduced by the seeds because the fill level in the filling area of the collection space decreases such that a larger partial flow reaches the bypass channel, whereby the pressure in the collection space decreases, which then triggers an increase in the seed feed by means of the pressurized fluid flow;