Steve190
Aquarium Advice Apprentice
- Joined
- Jun 27, 2013
- Messages
- 31
Just noticed this on one of my rocks and have no clue what it is, any thoughts?
Growth on rock
- Thread starter Steve190
- Start date
The friendliest place on the web for anyone with an interest in aquariums or fish keeping!
If you have answers, please help by responding to the unanswered posts.
If you have answers, please help by responding to the unanswered posts.
Dyl1234
Aquarium Advice FINatic
- Joined
- Mar 31, 2013
- Messages
- 789
It's weird looking lol, I am commenting so I can follow post.
Greenstreet.1
Aquarium Advice FINatic
Can't remember the name but they are good for the tank they help to keep your water clean.
woody390
Aquarium Advice Addict
- Joined
- Oct 9, 2012
- Messages
- 1,041
It's a pineapple sponge, harmless filter feeder
carey
Aquarium Advice Addict
Yep, pineapple sponges. And yep, they are perfectly safe. 
OP
OP
Steve190
Aquarium Advice Apprentice
- Joined
- Jun 27, 2013
- Messages
- 31
Thanks for the replies
