Thought some peeps might be interested in these. Converted my pool into a pond for my pbass a while back. After a few months I had a bloom of freshwater jellies. Had a second bigger bloom a few months after with hundreds appearing. They all eventually vanished and haven't had them since. I assume the pool is full of polyps now though I have removed the lillies they probably originally came in on. Did keep a handful for a few months in a round fish bowl and fed BBS.