Is it ok to have too much current for the clowns?

I bought a pair of clowns that's about 4" big today notice that they're having a hard time swiming. It seems like they're putting a lot of effort to swim from one side of the tank to the other. the damsels seems to be doing fine. Sometime I even see them getting blown backward when they stop swimming. I don't know if they're enjoying it or they're just having a hard time swimming. there are other places in the tank that have lower current but they seem to like hanging around right where the power head 802 is blowing. beside the current from my return pump ther's only that 1 power head in there that's blowing @ the feather duster.