Some help with an ID please!

[Fishboy&crazycatfishlady]

So I have these growing only on my highest rocks, they don’t seem to move. At first I was thinking some type of algae or something, but they seem to be individual. I’m stumped

 

[Lovemyreef2015]

Possibly hydriods.

 

[Chuk]

Kind of looks like hydroxide to me

 

[Chuk]

Hydroids I mean

 

[Big G]

Sure looks like Zanclea Hydroids. But you usually find them on SPS corals not rocks.
Or Colonial Hydroids. Need a better pic to be sure. Both are invasive.

 

[Fishboy&crazycatfishlady]

Sure looks like Zanclea Hydroids. But you usually find them on SPS corals not rocks.

Well...they are growing majorily on the rock of where a new pink birds nest was just homed! Now that you say that. So what would be a good plan of action?

 

[Big G]

Well...they are growing majorily on the rock of where a new pink birds nest was just homed! Now that you say that. So what would be a good plan of action?

Edited: Could also be Colonial Hydroids. Need a better picture of the tentacles. Both are considered invasive.

 

[Big G]

Hydroids are not good. They can "sting" corals which can injure the coral and even kill it over time as they overwhelm the coral in numbers.
Chemical methods: hot lemon juice injected into the mouth; kalk paste; superglue over the mouth.
Predator methods: results vary considerably- Filefish sometimes eat them; Peppermint Shrimp sometimes eat them
Physical methods: pull the rock out of the tank and burn each hydroid with a torch; hydrogen peroxide or bleach or acid dip and lots of scrubbing.

 

[Chuk]

Well...they are growing majorily on the rock of where a new pink birds nest was just homed! Now that you say that. So what would be a good plan of action?

I’ve heard that you can cover them in superglue or reef epoxy and they will take care of it. That would Depend on how widespread they are. If you don’t have anything glued to the rocks you can simply remove those rocks and have at it with a scrub brush then let them sit dry for a week or 2 before putting them back in the tank.

 

[Fishboy&crazycatfishlady]

Hydroids are not good. They can "sting" corals which can injure the coral and even kill it over time as they overwhelm the coral in numbers.
Chemical methods: hot lemon juice injected into the mouth; kalk paste; superglue over the mouth.
Predator methods: results vary considerably- Filefish sometimes eat them; Peppermint Shrimp sometimes eat them
Physical methods: pull the rock out of the tank and burn each hydroid with a torch; hydrogen peroxide or bleach or acid dip and lots of scrubbing.

When I get home from work I will try for a better picture, only have my phone to work with.

I can’t remove the rock they are. I also just had two turban snails, who were on that rock, suddenly die. From the hydroids? Maybe I should try a peppermint shrimp and some kalk paste

 

[Big G]

When I get home from work I will try for a better picture, only have my phone to work with.

I can’t remove the rock they are. I also just had two turban snails, who were on that rock, suddenly die. From the hydroids? Maybe I should try a peppermint shrimp and some kalk paste

KP Aquatics usually has a great deal on them. They are tough aggressive little guys.