Unipac Micro Fish Tank Gravel 2.5Kg By Jack Wall Posted on June 14, 2016 In Fish Tagged 2.5Kg, Fish, Gravel, Micro, Tank, Unipac An exciting micro gravel coated in fluorescent colours.Colours: White Mix, Black Mix, Pink, Orange, Yellow, Green, Blue, Violet and Magenta.Size: Handy (approx 2.5kg).