pon oxygen - breathing at surface
I went out to Pasadena to check on the pond today, and all five goldfish are alive and growing (two 3" comets and 3 babies - Oranda, Moore, and fantail) - I can't see the dojos but I would guess they're also fine.
Just one problem: I saw them coming up a couple times and gulping for air at the surface. It's a 320 gallon planted pond without a current. Last week I planted half a dozen plants to up the oxygen, but unfortunately during the winter months, the pond is only going to get 5-6 hours of direct sunlight, so photosynthesis will be limited.
If it were my own pond I would have started with a water pump/filter, but it's on my parent's property and they don't want to go to the trouble, so now I'm feeling a little guilty.
How big of a health problem does gulping for air indicate? Can fish lead happy, healthy lives even if they have to come up and gulp in the morning when oxygen is low, or is this slowly going to kill them?
Hi Jonathan, plants give off oxygen during the day but at night they remove oxygen from the water and give off carbon dioxide and that's why you can find pond fish gasping for air at the top of the pond. Like you said, having a waterfall or even a fountain going continually, would allow more oxygen to enter the pond making it healthier for the fish.
Yours Koily, Lorraine
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