How do I cycle my system?
- See the Nitrogen Cycle Overview on the Education Page for Information Nitrogen cycle
How do I acclimate the jellys?
- Know the salinity of your system and the salinity of the water in the bag the jellies are in. (They should both be very close to sp 1.o25) Make sure your system has completely cycled before adding jellyfish. (high ammonia and nitrite will kill your jellies).
- (If you raise the salinity to about 37 or 38 ppt to introduce the jellies into their system this will cause your jellies to be slightly buoyant. This helps them adapt to your aquarium. Introducing jellies at a lower salinity will cause them to sink to the bottom and bunch up and they will struggle to get up into the water column. After a day of acclimation, R/O (reverse osmosis) water may be slowly added to bring the salinity back down from 38 ppt to a specific gravity of 1.025. or 34 ppt)
- Float the bag containing your jellies in the aquarium for ~10 minutes to match bag temperature to the aquarium temperature (should be ~76 -78 F).
- Open the bag and remove half of the water using a cup or other small container. Do not try to pour the water out, you will end up pouring out your jellies.
- Add jelly aquarium water to the bag, equal to the amount you removed.
- Wait 10 more minutes and then release the jelly into your system. Overall you want at least 20 minutes of acclimation time for your new jellies especially if you have raised the salinity in your system to 37or 38 ppt..
How long will my jellyfish live?
This information refers to keeping jellies in small, home aquariums (30- 45 gallons) and does not necessarily apply to Larger, commercial exhibits.
Moon Jellyfish in captivity, when maintained properly, will live about one year from start to finish. That is their normal life expectancy living in a small aquarium. If you have a jelly that is 2” in diameter it is about 3 months old and you will have it to enjoy for about 9 more months. If you have a jelly that is 3” in diameter, it is about 4 months old and you will have it to enjoy for about 8 months, give or take depending on the quality of their husbandry. The year lifespan is measured from strobilation (the time when the jelly is “born”) to the time that it grows old and dies. The year did not start from the time you received your jelly, say May to the following May. This is because when you put your jellies in the exhibit they are already 3 to 4 months old. In Larger, commercial exhibits we have had moon jellies live for several years. Note that these exhibits used natural sea water pumped directly from the ocean, not artificial seawater using a boxed salt formula and the aquarium was thousands of gallons not 30 or 45 gallons. Most jellyfish species in nature live less than a year.
Can I keep fish in the exhibit with my Moon Jellies?
No, not with moon jellyfish. We recommend keeping the Moon Jellies by themselves. It is possible to keep other species of invertebrates and certain fish species with the Upside-down Jelly (Cassiopeia) though.
Can I have different size jellyfish in my system?
We recommend purchasing jellies that are about the same diameter. We do not recommend purchasing jellies that are vastly different in size (example: mixing 1 inch jellies and 5 inch jellies). If you purchase a group of mixed size jellies, the larger animals will out-compete the smaller ones. Do not overfeed in an attempt to get more food into the smaller jellies if you have mixed sizes in your exhibit. Feeding them more may seem like a solution, but you will compromise your water quality with excess food in the system. We have had some success with target feeding the smaller, weaker jellies and getting them to grow larger but usually the strongest animals will win out over the weaker ones.
How big will my jellyfish get?
This information refers to keeping properly fed jellies in smaller, home aquariums (30 to 45 gallons) and does not necessarily apply to large commercial displays like public aquariums.
Over time the strongest animals emerge and out-compete the smaller ones, continuing to grow until they die. In small home aquariums- 30 to 45 gallons, you can expect up to a 5” in diameter jelly as the maximum size. In larger habitats as in public aquariums or museums, they have room to grow bigger. It is not a good idea to overcrowd your jellyfish.
What if my jellies get too big for my tank?
DO NOT release it into the wild, ever. It is illegal to release any animal into the wild or a public waterway just about everywhere without a state issued permit to specifically do so. If you cannot find someone to take your jelly, contact us and we will find a home for it.
What if I go on vacation, can I skip feeding?
If your jellyfish are pulsing, healthy and have been fed daily with nutritional jellyfish foods, then you can safely leave for the weekend and not worry. They will be fine if they have had full stomachs 5 days out of 7.
Is there a refund policy?
Yes. We do ship our jellyfish FedEx overnight Or by Southwest Airlines Cargo and have a very successful track record sending live, healthy jellyfish to our clients. All jellyfish shipments must be inspected immediately upon arrival. If you feel you have received an animal that is not healthy, damaged, or is not alive, you must notify us immediately and within 24 hours to be considered for a refund.
Notification should be in writing via email. Please include a picture/video of the damaged jellyfish in the bag with the band still on, and a description of the problem. Email us at email@example.com. ACG will refund 100% of the purchase price less shipping charges using the same payment method that was used to purchase the jellies or jelly supplies.
Unopened Jellyfish supplement can be returned within 30 days of receipt for a full refund.
Jellyfish foods (Frozen and Dry) and your live jellyfish pets are not returnable/refundable.
All shipping costs are non-refundable. If you have questions please contact us prior to placing an order.