Cart Remove item Thumbnail image Product Price Quantity Subtotal × Air stone 50mm ball shape to take 3mm hose £3.69 Air stone 50mm ball shape to take 3mm hose quantity £3.69 × 4-Lid ONLY for Koi Air 50/65 £0.00 4-Lid ONLY for Koi Air 50/65 quantity £0.00 × Air stone 50mm ball shape to take 3mm hose £3.69 Air stone 50mm ball shape to take 3mm hose quantity £3.69 × 12, 29 - Diaphragm (1) with protective Teflon washers (2) discontinued. £0.00 12, 29 - Diaphragm (1) with protective Teflon washers (2) discontinued. quantity £0.00 Coupon: Apply coupon Update cart Cart totals Subtotal £7.38 Shipping Calculate shipping Country / region: Select a country / region… IrelandIsle of ManUnited Kingdom (UK) State / County: City: Postcode / ZIP: Update Total £7.38 (includes £1.22 VAT) Proceed to checkout