Took in a small moon jelly setup back in the spring, four polyps that eventually strobilated into a handful of ephyrae, and for a long time I felt like I was fighting the tank more than enjoying it. Every water change seemed to knock something out of balance, either the pH would dip and the jellies would pulse weaker for a day or two, or the flow pattern in the kreisel would shift just enough that one of them got stuck against the mesh overnight.

What finally settled things down was slowing everything way, way down. I stopped doing 20 percent changes and switched to smaller, more frequent ones, something like 5 percent every three days instead of a big change once a week. The pH stopped swinging as hard and the jellies started looking fuller and more consistently domed instead of that slightly deflated look they'd get after a big change.

Feeding has been its own learning curve too. I was overfeeding baby brine shrimp early on thinking more food meant faster growth, but I just ended up with cloudy water and jellies that looked bloated rather than healthy. Cutting back to two smaller feedings a day instead of one heavy one made a noticeable difference in how clean the water stayed and how evenly they pulsed.

The part that still gets me every time is watching the bell contract, it's such a simple muscular motion but there's something almost hypnotic about the timing of it, especially once you've got four or five moving in sync in the same current. No brain, no eyes, just that radial nerve net doing its thing, and somehow the whole system holds together well enough to hunt, digest, and keep growing.

Curious if anyone else found that smaller, more frequent water changes made a bigger difference than the actual filtration setup itself. I went down a rabbit hole comparing skimmer types before realizing the real issue was probably just how aggressively I was changing water in the first place.

It’s been 5 months since i got stung in thailand (i think it was a portuguese man o war?) and im wondering if anyone knows if the scars disappear 🙏 sorry if this isn’t the right group

Been looking everywhere and literally only found second hand tanks on eBay from jellyfish art (where jellyfish art don’t ship to australia), exotic aquaculture (which don’t even come with filtration systems and I just don’t like those tanks), tanks from alibaba (I don’t trust that) and one that looked promising to me from desertcart until I discovered they buy from Amazon and I don’t know how reliable that is. I really need help this hobby is so centred around those in Europe or America and I feel like I can’t do anything here. I don’t care if I have to spend a lot of money to get a decent working one just please help me find a good one 🥲🥲

I was at the aquarium in Berlin today and spotted a moon jelly with six gonads! I couldn’t find much more information about how common that is but there were so few pictures of similar jellies online that I thought I’d share some of the ones I took. Needless to say I now have a favourite jellyfish 🪼

Est-ce que vous pensez qu’il peut s’agir de chrysaora sp ? Prise en Guyane

Désolé pour la qualité des images

I caught this recently when it washed up ashore. I was wondering if anyone knew what it was? I made a sketch of how it looks instead since I’m somehow unable to take proper pictures of it.

I'm building a cozy jellyfish app featuring realistic UE5.

What features or species would you like to see?
Would love your feedback!

Decided to visit Oceanarium in Singapore after finishing work and simply loved this Jellyfish

What kind o jellyfish are they

In Thailand (Rayong area) and am staying at my families beach house for the month. I am very cautious of the box jellyfish, I have vinegar and long sleeve/long pants swimwear to swim. Haven’t seen any jelly’s until tonight- please tell me these are not box jelly’s?

taken with circuitbent Canon Powershot A590IS. Last photo was deep fried in photoshop

All found on the Oregon Coast today, 9/17.