Maintaining Your Water Feature in the Summer
Warm water has a low capacity for holding oxygen, so you may start to see your fish gasping for air close to the water’s surface, or especially close to a fountain or waterfall. As your fish struggle for oxygen, they’ll become increasingly stressed. And stressed fish are more likely to develop diseases… a scenario you want to avoid.
To optimize fish health during extreme heat, you’ll want to ensure your fish have the best pond environment possible. It all starts with a well-designed water feature. Depth, plant coverage, shade, and circulation should all be considered when building a pond. A minimum depth of two feet is suggested so the bottom can remain cooler.
You’ll also want to stock your pond with a lot of plants to provide shade for the fish. A good rule of thumb is to provide plant coverage of approximately 1/3 to 1/2 of the pond’s surface area. Waterlily pads provide great coverage, but if your pond lacks the proper amount, you can easily add floating plants such as water lettuce until the waterlilies fill in.