Don’t give up on pond aeration

In reviewing Andy Bale’s article on Northstar pond aeration (“Managing Northstar Pond: City aerators are unnecessary,” April 27), I was surprised to see him giving up so easily on the strategy of aeration.

As I understand it (though admittedly I’m not an expert in pond aeration), shallow ponds are more difficult to aerate and control algae; but I think this has been done successfully. A quick Google search on pond aeration systems turned up some relatively new venturi aeration systems that are advertised as successful for oxygenating, circulating and clearing algae from shallow ponds.

The method involves mixing air and water (using design based on venturi principle) in an inlet pipe prior to ejection. It seems with the inlet pipe opening placed somewhere distant from the air/water ejection point, horizontal water circulation across the pond is ensured.

Systems are advertised that are inexpensive and low-energy for small ponds. Perhaps such a system will be feasible and help create a more pleasant aerated and circulated pond (instead of a stagnant one); maybe even fish could survive!

James Trask

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