- Joined
- Oct 20, 2013
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- 904
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- Location
- DeLand FL
- What state or country do you live in
- Florida
Noticed this in my sump a few weeks back, it's gotten worse. My only guess is dust or detritus but I wouldn't think it would gather like that in the fuge section only.
It's on the rocks in fuge as well
It's on the rocks in fuge as well

