Is this bad?

[bsn_rn_cen]

My very first tank crashed so I decided to remove some if the rock restricting flow. I have noticed this all over the rock now. Any idea what it is and if it is bad.

 

[45ZoaGarden]

Yes it’s bad. Those are hydroids. I’d throw the rock away.

 

[bsn_rn_cen]

I have some reef saver that is new. If I take this rock out and put new in will it just infest the rock again?

 

[eschaton]

Yes it’s bad. Those are hydroids. I’d throw the rock away.

Really? That seems excessive. Hydroids tend to die out on their own as tanks become more established.

 

[bsn_rn_cen]

Do they do anything other than make the rock look fuzzy?

 

[45ZoaGarden]

Really? That seems excessive. Hydroids tend to die out on their own as tanks become more established.

Not so. My 3 year old jbj45 has hydroids. They’re annoying as HELL! I can’t throw the rock away because it is covered I’d zoas. And they don’t go away. They keep coming back. I’ve done everything. Ulns for 6 months, torching then, boiling water, super glue, reef putty. They’re my arch nemesis lol

 

[DSC reef]

I would suggest manual removal with a sharp blade in a seperate bucket of saltwater. You can also cover them in a thick kalk paste.

 

[45ZoaGarden]

Careful. If you chop em up in the tank. They’ll be every where.

 

[bsn_rn_cen]

I really am at a good point to just do a reset of the tank. Is there anything special I would need to do to the actual tank itself to prevent them from returning? Can I reuse the rock if I start it over with a bleach bath?

 

[DSC reef]

Depending how old the rock is bleaching it sounds excessive with all that good bacteria on it. Some have had success by spot treating with peroxide. Outside of the tank itself.

 

[eschaton]

Not so. My 3 year old jbj45 has hydroids. They’re annoying as HELL! I can’t throw the rock away because it is covered I’d zoas. And they don’t go away. They keep coming back. I’ve done everything. Ulns for 6 months, torching then, boiling water, super glue, reef putty. They’re my arch nemesis lol

It doesn't actually look like they're harming your zoa colonies in any way though.

I mean, maybe I'm wrong, but trashing a rock just because you don't like something growing on it is kinda like pouring salt across your entire yard to kill a few weeds.

 

[45ZoaGarden]

It doesn't actually look like they're harming your zoa colonies in any way though.

I mean, maybe I'm wrong, but trashing a rock just because you don't like something growing on it is kinda like pouring salt across your entire yard to kill a few weeds.

They are harming the zoas. It’s more annoying in person.

 

[DSC reef]

They are harming the zoas. It’s more annoying in person.

The ones you have look a bit different than the OP's. The colonial hydroids you have are a nuisance for sure. If I couldn't manually remove them, a thick kalk paste kept them in check.

 

[45ZoaGarden]

The ones you have look a bit different than the OP's. The colonial hydroids you have are a nuisance for sure. If I couldn't manually remove them, a thick kalk paste kept them in check.

I haven’t tried call paste yet. I might have to try it.

 

[DSC reef]

I haven’t tried call paste yet. I might have to try it.

It's the only thing I've found to work when they crowded the zoas. Hope it works for you. That's a nice garden you have

 

[45ZoaGarden]

It's the only thing I've found to work when they crowded the zoas. Hope it works for you. That's a nice garden you have

Haha it’s just beginning