With the time change still fresh in our memories, we need to remember to change the clocks on our timers and aquarium controllers. If those times aren’t changed, the fish and corals won’t likely know and the tank won’t skip a beat. But without changing the clocks, the lights will come on earlier and will turn off earlier. Again, this may not pose any issues with the tank or its inhabitants, but that means you might miss out on a full hour of tank viewing. If you do change the lights, be sure to perform the operation on all of the timed items on your aquarium, that way there are no conflicts.