powerhead to strong for tank?

I have a 60 gallon tank with a fluval sea CP4 powerhead that is rated for 90 gallons at 1375 gph. is this too strong for my tank because my clown, coris wrasse and a lyretail anthias so far and the clown and anthia sometimes seem to struggle to swim the clown stays in the corner where the least current is but does come out occasionally. should I get rid of this and get two smaller ones? Thanks:)