Overrun by Digitate Hydroids. HELP!

[musicreefer320]

They are rapidly spreading in my reef tank and I can’t get them under control. Any help in eradicating these?

 

[ScottR]

They are rapidly spreading in my reef tank and I can’t get them under control. Any help in eradicating these?

Nutrient control first and foremost. Feed your fish, not your aquarium. They’re almost impossible to starve I find. Peppermint shrimps will supposedly eat them but they’ll probably eat your corals first. I had some on one rock. Took the rock put and cleaned them off. But some came back but under control.

 

[sixty_reefer]

Can you post a pic of the hydroids, a lot of them get miss identification and there fire miss treatment. Different hydroids different ways to tackle.

 

[Gaufl]

Hey there!
I will be following along as I am starting to have the same issue.
Because of my NPS, I need to feed the tank quite heavily, so they are spreading.

I am not aware of any predators that will eat them... but.. isn´t there a nudi for everything?

Greetings,
Flo

 

[sixty_reefer]

If fast spreading will most probably be zanclea hydroids. Worth a google as there is only one successful treatment for those

 

[musicreefer320]

If fast spreading will most probably be zanclea hydroids. Worth a google as there is only one successful treatment for those

They’re definitely digitate

 

[musicreefer320]

My tank is fallow right now. There are no fish.

 

[ScottR]

Hey there!
I will be following along as I am starting to have the same issue.
Because of my NPS, I need to feed the tank quite heavily, so they are spreading.

I am not aware of any predators that will eat them... but.. isn´t there a nudi for everything?

Greetings,
Flo

There is a nudi. I forget the exact name. Worth googling. But it’s a beautiful one with a spiky back that almost looks like a dragon. Haven’t ever been able to find one.

 

[ScottR]

My tank is fallow right now. There are no fish.

I’m fallow and have them too. Go figure. I actually feed my tank less frequently. Just reef roids for LPS and small bits of scallop for shrimps.

 

[sixty_reefer]

They’re definitely digitate

Brown ones?

 

[OutsideBrian]

Look like this?

 

[musicreefer320]

I’m fallow and have them too. Go figure. I actually feed my tank less frequently. Just reef roids for LPS and small bits of scallop for shrimps.

I’ve been feeding reef roids and benepets. I’m gonna stop the feedings and see if that starves them. I may add a peppermint too and put my frogspawn in a basket so he can’t get it.

 

[musicreefer320]

Look like this?

Yes. Tons...

 

[musicreefer320]

Peppermint shrimp not working.... they continue to spread. Starting to sting my zoanthids....

 

[ScottR]

See if you can find one of these nudibranchs: Cratena peregrina. They’re beautiful and I believe they only eat hydroids

 

[sixty_reefer]

Yes. Tons...

[emoji23]

 

[musicreefer320]

[emoji23]

Why is that funny?

 

[sixty_reefer]

Why is that funny?

Not ment to be funny but I was asking for a pic a few days back, the only solution for this ones is febenzodole. Probably worth spend some time on a seahorse forum as they common in seahorse breading, full dose and treatment method for it should be found there. Also febenzodole will kill some soft corals.

 

[Cnidoblast]

https://www.wikidata.org/wiki/Q4012769
They do look like members of the genus Zanclea

 

[OutsideBrian]

Any luck getting rid of them? Mine have increased a bit. I’ve gotten my nitrates down to about 5 from 25