A trip to the aquarium will wow you with giant turtles, sharks, and colorful fish, but the one exhibit that always seems to mesmerize us is the jellyfish tank. There’s something about those free-swimming sea creatures that just captivates the viewer as they move about the water using undulating contraction-pulsations. Besides some of them having the ability to sting, you might wonder why we never see the little creatures, made up of more than 90 percent water, in the average person’s fish tank.
The main reason is that they can’t be kept in a regular aquarium since they’ll get sucked into the water filtration intakes and are liquefied to death. We know it’s sad to think about, but, to solve this problem, Duke University Biology and Environmental Science alumnus Alex Andon developed a tank that was jellyfish-friendly. Andon started a business called Jellyfish Art and retrofitted an existing fish tank to be suitable for a jellyfish. Once he figured out what it takes to make a fish tank jellyfish-safe, he started selling the first edition tanks online, and then decided to sell them on a broader level, taking to Kickstarter for support.
The Desktop Jellyfish Tank pulls water through a layer of rocks at the bottom of the tank. The water is then pulled up one side of the cylindrical tank to the surface. It then goes back down the other side and is sucked up once again by the rocks. The circular flow also keeps the jellyfish centered in the middle of the tank so that they’re not all huddled into one area. The tank itself is rather large, holding 7 gallons of water. It can house up to five jellyfish, which are lighted by a built-in LED lamp. If you want your jellyfish to look different in various colors of light, the LED lamp can be changed with a provided remote control.
The rocks Andon uses are called “living rocks,” and they have been seeded with live nitrifying bacteria, which break down the jellyfish waste. You’ll have to change the water each week though, so even though you don’t have to take your jellyfish out for a walk a few times a day, you still have maintenance you have to tend to to make sure the jellyfish stay happy and healthy.
If you’re worried about having stinging jelly fish sitting on your desk, some freshwater species, that are colorless and are less than an inch in diameter, don’t actually sting. The jellyfish provided to customers of the Desktop Jellyfish Tank are moon jellyfish are aren’t harmful to humans. Each fish will cost $39 and will be shipped overnight from the company’s breeding center. You can also buy frozen plankton from Jellyfish Art, which is what the little critters dine on.
Andon is raising money via Kickstarter right now to get the tanks into commercial production. He thinks the first tanks will be ready in the next few months. To get your very own Desktop Jellyfish Tank, you’ll have to pledge $350 to reserve the tank and get a voucher for a starter kit that includes three jellyfish and plankton.