Although not the greatest method it should be fine....and hey it's already done! Just makes troubleshooting harder and the system has more pollutants to deal with immediately.
fishit does make a valid point about potential pollutants being soaked up/stored in the LR.....issues like longer cycle times, algae outbreaks, heavy metals leaching back into system, unexplained losses later can all possibly be attributed to this. All you can do is move on from here. Still looking forward to pics