If your fish tank uses electricity to control temperature, filtration or oxygen levels and your fish made it through the storm — lucky guppies — here are some ways you can help them get back to normal.
The warmer the water, the less oxygen it can hold, according to an Algone Corporation blog post. To get more oxygen in the water manually, or quicker if your power has already returned, churn the water a bit. You can do that by taking a cup full of water out of the tank and pouring it back in about once per hour or more often if you notice your marine pals are having a hard time breathing, the post explained.
Keeping the tank cooler will also help. You can wrap the tank in Styrofoam and blankets and put ice cubes in a sealed plastic bag into the tank to help stabilize the water, the post said. Be sure to change the water temperature gradually or it might harm the fish.