Tips about Hot Weather: Always go by the water temperature. If you don't have one, get a water thermometer! 85˚-89˚F - Feed wheat germ food... cut back on feeding to once or twice daily. Fish cannot metabolize at this temperature. 90˚F - Stop feeding. Any uneaten or unprocessed food will add to organic load and oxygen depletion in the water. Fish will begin to die. Caution: Using an algaecide above 75˚F will remove an oxygen producing plant (the algae) and add to organic load, creating oxygen depletion (as above). Using Microbe-Lift®/SA may cause an increased oxygen demand in the pond at water temperatures above 75˚F in some ponds. Make sure your pond is adequately oxygenated (>4.0 mg/L dissolved oxygen). It is still safe to use Microbe-Lift/PL. Shade sails, tall plants beside the pond, and floating panels of Styrofoam on the pond are easy ways to shade the pond. Shade can lower the temperature of the pond by 10˚-20˚F. For the fish, this can be a life-saver.
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