2 and 4 outlet models available. Airline, stones, diaphragms, and Y-distributors included. For ponds up to 10,000 Litres. Pontec PondoAir sets, are an excellent priced air pump collection from Oase. Air pumps help to introduce vital oxygen to pond systems to help increase the health and life span of the fish. The PondoAir Sets have a twin outlet. The pump is supplied with airline tubing and airstones. The pump is suitable for outdoor installations and is perfect for ponds up to 10000 litres. For Ponds Up to. 150 x 90 x 90mm. 2 Airstones (30mm diameter), 2x 5m Airline, and 2 replacement diaphragms. 185 x 115 x 115mm. 2 Airstones (40mm diameter) and 2x 5m Airline, 2 replacement diaphragms. 220 x 200 x 200mm. 2 Airstones (50mm diameter), 2x 5m Airline, 4 replacement diaphragms, and 2x Y-distributors. 225 x 170 x 175mm. 4 (via included air distributor manifold). 4 Airstones (50mm diameter), 4x 5m Airline, and replacement diaphragms. 315 x 310 x 215mm. You May Be Interested In.. Pisces Preformed Garden Ponds. Pisces Black Corrugated Hose. Orders placed before 3pm Monday-Friday (excluding public holidays) will be dispatched the same day.