I wouldn't have planted anything in the fuge at this stage. Austinsdad is correct in assuming that that the plants will suffer from the cycle.
The only reason to have any lights on during the cycle would be if you have LR
in there and want to try and increase the chance or survival of the photosynthetic life on the rock. Downside of this is a potential uphill battle against algae. 4 hrs of lighting is all I would do in this case.