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Emergency Aeration of Fish Ponds
Author(s) -
Boyd Claude E.,
Tucker Craig S.
Publication year - 1979
Publication title -
transactions of the american fisheries society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.696
H-Index - 86
eISSN - 1548-8659
pISSN - 0002-8487
DOI - 10.1577/1548-8659(1979)108<299:eaofp>2.0.co;2
Subject(s) - aeration , environmental science , fish <actinopterygii> , hectare , fish pond , environmental engineering , chemistry , fishery , ecology , biology , organic chemistry , agriculture
Dissolved oxygen (DO) concentrations were depressed in 0.57‐hectare fish ponds through algicide treatment and the effectiveness of different techniques of emergency aeration was compared. The most effective device for emergency aeration was a paddlewheel aerator powered by a tractor. A tractor‐powered Crisafulli pump with a discharge capacity of 18.9 m 3 /minute was also a relatively effective aeration device when used either to spray DO‐deficient water into the air and back into the pond or to pump fresh, oxygenated water from another pond into the one with low DO concentration. A lower capacity Rainmaster pump (3.8 m 3 /minute) was much less effective than the Crisafulli pump when used to discharge oxygenated water into a DO‐depleted pond. Neither of the pumps raised DO concentrations appreciably when used to circulate DO‐deficient water in ponds. Three sizes (0.25, 2.2, and 3.7 kilowatts) of spray‐type surface aerators failed to appreciably increase DO concentrations.