SAChichlidLover
Fishaholic
I agree, jellyfish projects can be stupidly prices probably due to low demand. After all the research turns out best option would be to diy a tank for them as you could pull this off without spending too much on the tank. I agree with @Colin_T with the air filtration as the best bet as they also require good water flow to sustain themselves. Really cool concept in all honesty and I reckon if you could pull off breeding them then that would be so awesome considering when you try and find some of the other species you can keep, they are incredibly pricey (£70 for one small atlantic sea nettle!) plus with all the special requirements for each species it's a tough one but not impossible. Diy tanks price would really depend where you're from for materials, I'm so interested in these animals ?