This is something you hear quite a lot on the internet. “Bubbles will kill jellyfish!”
Well is it really true? The answer is: sometimes. As always, it’s all about size. Size of the bubbles that is. Air bubbles tend to do harm to jellyfish when they are small enough to get lodged up inside the jellyfish. They wind up stuck in the gut of the jellyfish, and then physics does its magic. The bubble will insist that it rise, which can actually begin to push a hole right through the jellyfish. After several hours, the bubble will escape, leaving a gaping hole in the jellyfish. Generally speaking, any bubbles coming out of an air-stone are going to be hazardous to your jellyfish.
If the bubble is large enough, it will just move right up, pushing the jellyfish aside. That being said, a constant bombardment of large bubbles can still beat up our fragile jelly friends.
Some jellyfish tanks are powered by air. Those aquarium typically use larger sized bubbles, and they often have a guard that keeps the bubbles away from the jellyfish.
Here are some common situations that might produce unwanted bubbles:
- Pouring Water Into Jellyfish Tanks– Water should always be carefully added to jellyfish aquariums in such a way that it does not create bubbles. Gentle is key.
- Malfunctioning Pump– When the water level in an aquarium gets too low, the pump can draw in air, causing a ton of tiny shredded bubbles to be produced. Always make sure your aquarium is filled up to the correct level!
- Protein Skimmers– These filtration devices aren’t too common on jellyfish tanks, but they can be found in custom, and larger aquariums. They produce some of the smallest bubbles available. Under normal circumstances, those tiny bubbles should stay within the device. They can make it out, and into the jellyfish side of the aquarium, though. If you use a protein skimmer, always make sure it is operating correctly, and at the proper water level.
You can buy your own pet jellyfish and jellyfish aquarium at our online store: Jellyfish Warehouse