Hey everyone, I switched my pump from running in "filter" mode to "recirculate" mode to recirculate my water until I do my next backwash. Lo and behold, a small amount of water started coming out of end of the pipe where the waste/backwash water usually comes from. It looks like about 1 pint per minute. Is this normal/to be expected, or should there be absolutely no water coming out of the waste pipe when in "recirculate" mode? Thanks!