- Joined
- Aug 12, 2018
- Messages
- 252
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- 387
I discovered this purple/black colored critter. As soon as the light comes on, it disappears. The aquarium is a 37 Gallon with a HOB Seachem Tidal filter. It has been running for 9 months. The rock is from my other aquarium that has been setup for over a year. In the setup I did get some live rock. However, I've never seen this critter before. Any ideas?