Yes Op, never report ALL zero. Happened that to me when I was still learning about credit. Too less is bad just like too many is.
Just make sure next statement will have balance (no high UTI though) and score should climbed back up as long as there are no major changes to your credit.
Figure out 1-3% of any of your cards credit lines and have that report. Then pay it after statement cuts. You'll get the points right back and maybe a few more. FICO util has no memory.
The good thing is that FICO has no memory, so if you report a small balance on one card next month your score should jump back up...