SPS tanks are not good for anemones. They're too hard to predict.
Your clowns' natural host is Heteractis Magnifica, but they are fickle and delicate when new. They also settle at the top of the rockwork, blocking the SPS light, or killing the ones at the top.
Next best for your clowns is Entamacea Quadricolor. It is not their natural host but they are often attracted to it. However this anemone will roam occasionally and split every few months when healthy.
The last options are Heteractis Crispa or Macrodactyla Doreensis. Neither of these are commonly seen with your type of clownfish, but it does happen. Both of these are less likely to roam and tend to settle near or in the sandbed, away from your SPS.
FWIW, your clowns don't actually NEED an anemone.