Bloody Nose

[Nick Price]

One of my gerbils seems to have a bloody nose.  It isn't bothering him, but I am wondering if it could be a more serious issue.  About 3 days ago, I noticed that he had a "chapped" nose.  I didn't really think much of it, as it didn't look bad and he didn't seem to think much of it.  The next day I noticed it was a little worse, but I decided to wait one more day.  Yesterday, it looked as if it had cleared up a bit, so I left it alone.  Today I checked on it and it looked as if it had a scab on it and dried blood on it.  I thoroughly checked out both gerbils, but the only injury I found was the bloody nose.  I haven't seen, or heard for that matter, anything else wrong with him.  Is this serious?  It still doesn't seem to be affecting him.  Do I need to help him?  If so, what should I do?  Thanks, Nick   BTW, I use a mixture of Aspen bedding and regular unscented "el cheapo" Toilet tissue.