Too much flow?

[cam4ou]

I have a 10 gallon nano tank. It is fully cycled and has two Cindy anemones, a tomato clown, and a strawberry basslet. I have a 15 gallon filter and a power head (450-650 can’t remember). The anemones appear to like the flow, they have a general sway. But the fish never come out. Literally the only time the leave the caves is when I turn off the flow to feed or change water. Is this too much flow for my fish?

 

[Reefer5640]

What style of power head is it? 450 would be on the high side for me. 650 would be too much for a little 10 gal in my opinion. Is it an ac power head? I’ve found in smaller tanks the 20-40x turn over rule of thumb gets exaggerated since there’s not a lot of room for the movement to dissipate, especially with ac power heads so I generally go for the lower end of the spectrum.