Gardens Gasping fish
fish always gasp at the surface in the morning. I have no filter
or pump, but my pond has lots of oxygenating plants.
fish are suffering from oxygen depletion. While it is true that
plants produce oxygen during the day, they produce carbon dioxide
at night. By the time morning comes the fish are literally gasping
for air. This is much worse in warm weather as warm water naturally
holds less oxygen than cooler water. The best solution is to run
a fountain or other moving water feature continuously.
Gardener, Issue 90, 2002, Page 20
Reproduced with permission from the former Weekend Gardener magazine. The views expressed here are not necessarily those of the RNZIH.