Jellyfish are popular ornamental fish tank pets. Their hypnotic forms and soothing movements transform them into living works of art. You can have exotic jellyfish anywhere in your home, even on your desk, with the right setup. It does, however, necessitate a lot more thought than simply setting up a standard aquarium, because jellyfish are delicate organisms that require a specific tank environment to thrive.
Part 1 Selecting the Tank
1. Look for an aquarium tank that is small to medium in size. You can keep your jellyfish in a clean and sterile aquarium tank. You could keep only one to three small jellyfish in a small tank that fits on your desk at work or at home. Alternatively, you could opt for a medium-sized aquarium tank that can house a greater number of jellyfish. Look for a tank with a circular shape or one that is tall and narrow.
A circular tank with a flat base is ideal because the shape allows your jellyfish to float in the tank water. This is critical for your jellyfish’s health and happiness.
2. Purchase a jellyfish tank kit. Another option is to purchase a tank kit designed specifically for jellyfish. These tanks are small, usually circular in shape, and can house one to three small jellyfish. Tall, narrow tanks can also be purchased for a larger number of jellyfish. Jellyfish tank kits are available online or at your local pet store.
Keep in mind that jellyfish tank kits are not cheap, with prices ranging from $350 to $600. To save money on your setup, you could try using an aquarium tank instead.
3. Get the rest of the supplies you’ll need. Most jellyfish tank kits include all of the supplies needed to get the tank up and running. If you are keeping your jellyfish in a fish aquarium, you will need to buy the following items:
An air pump
An undergravel filter plate
An air tube
Substrate for the bottom of the tank, such as glass beads
An LED light
An LED remote control (optional)
Part 2 Setting Up the Tank
1. Locate a flat, elevated area that does not receive direct sunlight. Jellyfish thrive in low-light conditions. Place the tank in a flat, raised area of your home or office that does not receive direct sunlight and is not near any heat sources or electrical equipment.
A low table in a dark corner of your home or the top of a desk would suffice. You could also get a small raised wooden stand and place the tank on top of it for your home or office.
2. Install the filter plate and the air tube. Connect the filter plates and insert the air tube through the centre of the filter plates. Depending on the filter plates you purchase, they may come in several small pieces or one to two larger pieces. The air tube should be placed in the centre of the tank so that it can circulate air throughout the tank.
To fit with the rest of the plates, you may need to trim one of the plates on one side. This can be done with scissors or an X-ACTO knife.
In the tank, place the filter plate and the air tube. When you slide the plates into the tank, they should cover the bottom of the tank and fit snugly.
3. Insert the substrate. Substrate will aid in the concealment of the filter plates in the tank. Instead of sand or gravel, you should use glass beads. Gravel can be dangerous to your jellyfish. Place the beads into the tank by hand to avoid breaking or nicking the tank.
Glass beads can be found at your local dollar store or online. Glass beads the size of jelly beans are an excellent substrate for your tank. For a medium-sized tank, you should add at least one layer of substrate or 2 inches of glass beads.
4. Join the air tube and the air pump. After you’ve placed the substrate in the tank, connect the air tube to the air pump. Make use of the airline tubing for this.
Insert the airline tubing into the air tube, allowing it to dangle a few inches inside. The airline tubing should then be connected to the air pump. This will allow you to use the air pump to cycle air into the tank.
Part 3 Adding Water and Cycling the Tank
1. Fill the tank with salt water. Because jellyfish are salt water animals, you must only use salt water in the tank. You can make your own salt water from marine salt or purchase pre-mixed salt water from your local pet store. You should not consume sea salt or salt!
You can use aquarium salt or ionic salt to make salt water for your tank. Make sure there are no large chunks of salt in the water before dissolving the salt crystals in reverse-osmosis filtered water or distilled water. Use bottled water instead of tap water because it contains elements that may be harmful to your jellyfish.
After you’ve added the salt water, use your hand to smooth out the glass beads so they’re even at the bottom of the tank.
2. Connect the air pump and LED light. After that, you should leave the tank running for at least 12 hours. The water should clear from cloudy to clear during this time.
Some jellyfish tank owners will immediately add the jellyfish to the tank and then perform daily water changes. The water changes aid in keeping the ammonia levels in the tank under control. However, allowing the tank to cycle before adding the jellyfish will ensure that your new pets remain healthy in their tank.
3. Check the levels of ammonia, nitrite, and nitrate. You can purchase aquarium test kits that will allow you to test the tank water for these elements. This should be done after the tank water has cycled through and appears clear. The test should show an increase in ammonia, followed by a decrease in nitrite as the ammonia level decreases. As the nitrite level falls, nitrate will begin to appear.
The tank should ideally have ammonia and nitrate levels of 0.0ppm. You may have lower nitrate levels, possibly as low as 20ppm. Once these substances have reached these concentrations, you are free to add jellyfish to your tank.
Part 4 Selecting and Adding Jellyfish
1. Purchase jellyfish from a reputable pet store. Look for online pet supply stores that specialise in jellyfish and provide a money-back guarantee. Most jellyfish supply stores sell moon jellyfish or blue blubber jellyfish, but other varieties are available for your tank. The jellyfish will be delivered to you in plastic bags while still alive.
Alternatively, you can purchase jellyfish in person at a pet store. Speak with a sales representative to ensure that they are knowledgeable about the jellyfish they are selling. You want to buy jellyfish that are already floating and moving in a tank, with bright, healthy tentacles. Often, pet supply stores will have a section dedicated to jellyfish and other sea creatures.
Moon jellyfish, a type of jellyfish, thrive in home aquariums. Moon jellyfish are seasonal creatures that live for 6 to 12 months.
2. Look for jellyfish with similar diameters and sizes. Because your jellyfish tank is a closed system, you don’t want to overcrowd it with jellyfish of varying sizes. The larger jellyfish will eventually outgrow and overpower the smaller jellies. The smaller jellies will then shrink in size and perform poorly in comparison to the larger jellies.
In addition, you should only buy one type of jellyfish for your tank. You could, for example, decide to keep only moon jellyfish or blue blubber jellyfish in your tank. Most jellyfish species do better when kept together in the same tank.
3. Slowly acclimate your jellyfish to your tank. The jellyfish will be delivered in clear plastic bags. To begin, ensure that the tank has been completely cycled and has healthy nitrate levels. After that, it will take about 15-30 minutes per bag of jellyfish to acclimate your new pets to their tank.
For 10 minutes, place the sealed bag of jellies on the surface of your tank. This will assist in bringing the water in the bag up to the temperature of the tank water.
After 10 minutes, open the bag and use a clean cup to remove half of the water. Then, add tank water to the bag, making sure that the amount of tank water equals the amount of bag water removed.
After another ten minutes, slowly pour your jelly into your tank. To gently release them, use an aquarium net. Do not pour them into the tank because this will shock them.
4. Check to see if your jellyfish are pulsing and moving around in the tank. It may take a few hours for your jellyfish to adjust to their new surroundings. Once they are at ease, they will pulse and move in the tank three to four times per minute.
Over the next few days, keep an eye on your jellyfish to make sure they’re moving and pulsing freely in your tank.
Your water temperature may be off if your jellyfish appears to have turned inside, a process known as eversion. Jellyfish should be kept in water temperatures ranging from 24 to 28 degrees Celsius. You may need to adjust the temperature of your water and retest it to ensure that it has the proper ammonia, nitrite, and nitrate levels.
Part 5 Caring for the Jellyfish
1. Feed the jellyfish twice a day with live or frozen baby brine shrimp. Baby brine shrimp can be purchased live or frozen at your local pet store or online. Your jellies should be fed twice a day, once in the morning and once at night.
The brine of live shrimp can be stored in the refrigerator for up to two weeks. To avoid being stung by the jellyfish’s tentacles, feed them through a small opening in the tank. The jellyfish should be able to catch and consume the food on their own.
Do not overfeed your jellies, as this may degrade the tank’s water quality. Overfeeding the smaller jellyfish may not be able to encourage them to grow and stay healthy if you have both smaller and larger jellyfish in the tank.
2. Make a 10% water change once a week. A 10% water change once a week is recommended to maintain healthy water quality in your tank. This means you will discard 10% of the water and replace it with new salt water.
Always test the water quality after every water change. The salinity level should be between 34 and 55 ppt, which is close to that of natural seawater. You should also double-check the tank’s ammonia, nitrite, and nitrate levels.
3. Remove any jellyfish that have grown too large for the tank. Your jellyfish should grow to a healthy size if properly cared for. You can avoid overcrowding by keeping only a few jellyfish in your tank at a time. If your jellyfish appear to outgrow their tank or if your tank appears to be overcrowded, you may need to remove one of them. To accomplish this, do not release the jellyfish into the wild through the ocean or another body of water. This is illegal and endangers the jellyfish’s life.
Instead, contact the seller from whom you purchased the jellyfish to arrange for a new home or caretaker for the jellyfish.
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