what are these?

[rspar]

Can someone tell me what these 3 things are?

[rspar]

#2

[rspar]

#3

[Wilafur]

first 2 are most likely sponges or tunicates. a great sign that your tank is healthy.

as for #3, they are hydroids of some sort. they are not something you do not want in your tank as they spread fast and can sting fish.

[Anemone]

What he said.... :D

Kevin