FirelsHot is spot on, using the spring's water to add O2 into the pond while providing it with a source of water. If the spring has sufficient amount of water flowing that is. If it's less than 3 gallons a minute, there will not be enough O2 to saturate the impact area. Scattering the water using reserve chevrons to cover wider surface of the waterb to scatter the impact areas will hopefully do the trick, but it needs to be 3gal/min or greater.
