Yes, Blue Rams evolved in shallow, still and very warm puddles in the wild, being quite high bodied for such delicate fish they do not fare as well in a strong current, causing them to become stressed and usually secluded as they will not want to venture out into what is a hard struggle for them. A gentle flow, even moderate current is quite acceptable, provided that there are area's in which they are able to rest without being "pinned' down.
It would be good to know more about this tank - size, parameters, temp and stocking.
Blair.