there is many articles on anemone. countless of them. any person wishing to keep must be prepared.
Anemones are invertebrates, not corals to begin with. There are opportunist feeders not hunters. Not all anemones host clown fish. IN CAPAVITY, Clowns do not need anemones and anemones dun need clown, though usually fair better with clowns.
Anemones have the odds against them, the success rate of keeping anemones for years is not many. for every 1 in 18 do not surpass 2 yrs i remember correctly and 1 in 36 with owners for 2-5 yrs.
Anemones ought not be place with tanks with exposed powerheads. Anemones have a tendency to move. Their movement is natural. Constant movement means they have yet to establish a foothold. Either the lighting or water flow isnt suitable for the,
In your case, it prob likes where it is. moving can be bad idea with a suitable ground is not available. Anemones have Zoos, they require lighting to nourish themselves. Feeding occassionally is recommended. Feeding too much may cause stress, causing them to split.