That's exactly how I've been adding water! And I carefully positioned the sponge in a location well within range of the long plastic straw that I've been using.Go chickies go!!!! Be prepared with some tubing and a syringe of some sort to add water through that ventilation hole. Or, if the sponge is under the ventilation hole, I have been know to use a turkey baster to squirt water in. My incuview had trouble holding any type of moisture for long periods and I had to frequently add water.
