- Joined
- Dec 24, 2017
- Messages
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- What state or country do you live in
- Pennsylvania
Had a coral rock shift on me today and just noticed a little patch of some sort of hitchhiker on the backside. I don’t think I have seen this before. Anyone know what it is and more importantly do I need to worry about this stuff spreading onto my rock work? Picture is under white light. It looks maroon under blues.


