- Joined
- May 19, 2020
- Messages
- 66
- Reaction score
- 14
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Does not look like any zoa disease/pox ive seen and with series of holes wonder if these are burrowing worms or bite marks from nudibranchs. Take a flashlight to the stem and see if there are any nudibranchs or movement at the stem surface
I’ve been monitoring them at night for about 15 minutes at a time and I do not notice any movement of nudibranchs. I do have a small amount of Asterinas in the tank.Does not look like any zoa disease/pox ive seen and with series of holes wonder if these are burrowing worms or bite marks from nudibranchs. Take a flashlight to the stem and see if there are any nudibranchs or movement at the stem surface
Asterina is also possible.I’ve been monitoring them at night for about 15 minutes at a time and I do not notice any movement of nudibranchs. I do have a small amount of Asterinas in the tank.
But this would not explain the spot on the rock work.Asterina is also possible.
Colonial tunicates maybe?Added some better pictures.
On the rock, im seeing pineapple sponge. These are short lived and will dissipate as silicates reduce. You can peel them off with the edge of a credit card into a net if they are too many. They are harmless and feed off algaeBut this would not explain the spot on the rock work.