Yamitsu Filter Primer 250ml ( 3,750 Galls)  Ref: 501610
	Active bio- bacteria for rapid filter start up of new and winterised systems. Kockney Koi Filter Primer is an advanced product specifically designed to mature biological filters and will actively promote the growth of nitrifying bacteria. Filter Primer will discourage the formation and propagation of Heterotrophic bacteria species which will inhibit the effectiveness of your filter Treats: 3,750 Gals