Great opportunity to purchase a professional quality air pump for a bargain price. This pump produces plenty of additional oxygen for your pond and comes with all of the fittings you need to operate straight from the box. We are currently running this pond air pump on our own test pond and have found it offers excellent performance. Half price air pump accessories kit - Save £12.99. This pump is perfectly suited to ponds with a volume of 25,500 litres (20,000 if keeping fish and 10,000 if keeping koi).