I would top water for a couple of weeks...but I'm "OCD-Me".
Unless you are where it's really hot and dry I would think that you will probably need to top water every two or three days.
If you have a spray bottle I would spray the rhizomes to help rinse anything away from the roots. Remember, too, that after you water that you need to dump the drainwater being as that contains the possibly flushed fertilizer. Did you do a 100% LFSM or a LFSM/perlite mix? I *think* the protocol for growing in 100% LFSM is not to tray water...the moss stays too soggy, thus the need for the perlite. Also, for flushing 100% LFSM might be difficult to get the water moving through. I'm a newbie, though, so maybe one of the experienced folks will correct me where I'm wrong.
Having said all that I think your plants will be fine...just need a little time to recuperate from all the moving around and probably from the bit of fertilizer they were subjected to. Best wishes!