- Joined
- Dec 22, 2017
- Messages
- 249
- Reaction score
- 333
So I was staring at the side of my tank this evening to see how my homemade rock was coming along and if anything had grown on it when I noticed these orange things on the glass. It's due for a cleaning but I thought I would check and see what they were first. If they were anywhere but on the glass I would think they were the start of sponges or something. So any ideas?