I’m looking to pump air into my large pond , oxygenation and help disperse duck weed.

The air pump from the garden retailers are fortunes. 150 litre per minute £500.00 ish aqua brand.Actually need a higher output / air flow.

Seems to me an air pump shouldn’t be that much money.

Should run off electricity

Any ideas , mindful there should be no mechanical leakage of oil or similar into the air …

Thanks Filters are in fact so good that in certain circumstances, when the ambient air is already polluted, a diesel car will tend to extract more particles from the air than it emits. Emissions Analytics worked with........etc etc

He who dies with the most toys wins...