What is this

[Chrisboling]

They are on my rocks and walls

 

[Lionfish Lair]

It's tunicates, if you are talking about the little daisy-like things.

 

[Chrisboling]

Yes I am, bad or good

 

[Lionfish Lair]

They tend to do a little period of growing, if there's available nutrients and then die off. Is your tank newish?

 

[Chrisboling]

Close to a yr

 

[Lionfish Lair]

Would you be able to back up and take a picture of how many of them you have going on? They are traditionally not much of a problem, but in the picture you seem to have a lot.

 

[Chrisboling]

they are all over that rock and on the wall in the back

 

[Tahoe61]

I would really love to see an image with more white light and less blue if possible please

 

[Chrisboling]

I will send you one when I get home

 

[Chrisboling]

here is a little better pic

 

[Lionfish Lair]

Are they in just one section?

 

[saltyfilmfolks]

Oh wow.
That's cool!

 

[Chrisboling]

Seems to be in different parts of the tank

 

[Lionfish Lair]

They are cool...... to a point. Usually they don't do well in our tanks and die off, BUT (isn't there always a but!) in the wild, these critters are a fouling organism, so they have the natural propensity to get everywhere on everything. Usually they are limited by food, which can include zooplankton, phytoplankton and detritus. I have never seen tunicates take over someone's tank before. I had a tunicate tank one time and it wasn't easy to maintain. Could you have introduced it recently with a coral or such?

I would think it time it would burn itself out in time. If they didn't subside, it would be easy to limit the food and step up the maintenance. If you're feeding your corals, this could also be a source of of extra nutrients.