What will eat hydroids

[dc_909]

Worst damn pest ever!!!

 

[theroon]

Well, I have Hydroids too…

I have been using Joe’s juice with some success. They will disappear and pop up around a month later. I have placed putty over them and I will see if that works.

Couple people mention the tweezer method. I would imagine that they would simply come back?? It would be hard to get them completely off the rock when you pull them. Or do they simply come off?

 

[Aquabucket]

I know a natural method that works on the brown colonial hydroids but many of you might find it a bit tedious. You can frag a hydnophora (horn) coral into small pieces and glue them in a pattern surrounding the hydroids. The hydnophora will destroy the hydroids eventually.

 

[nebraskareef]

Sweet tip aquabucket.

 

[omni2226]

Pluck with tweezers then use the tweezers to scrape the top layer of rock off.
Just till the spot the hydroid was on turns white.
In a few days its purple/brown again.

If its a smallish rock I use a diffrent method, the same one I use for Aptasia. I light a large scent candle, pull the rock out then torch 'em. Heh heh...

 

[majorpayne360]

I have used Aptasia control with great results at work and home, haven’t had any come back yet and it’s been about 2 or 3 months.

 

[OrangeKoi]

If they turn blue are they still hidroids?

 

[BigJPDC]

I used a fw\lugol's dip and then superglue - all gone.

jp

 

[barjam]

Something in my tank eats them....

I am nearly 100% certain it was my YT. When he was introduced he would pick at them and eventually they all disappeared.

 

[hatebreed]

<a href=showthread.php?s=&postid=9743082#post9743082 target=_blank>Originally posted</a> by JD52
Ive read where Tiger Coweries will eat them in larger systems.

I'd be very careful with that. I have had tiger corwries eat open brain corals as well. A cowry is something I wouldn't hesitate to classify as predatory to corals.

 

[flyyyguy]

A blow torch erradicates them permanently if you are fortunate enough to be able to take the rock out. Thats also my preferred method of getting rid of aiptasia/majanos. 100% kill rate.

 

[buffalo123]

<a href=showthread.php?s=&postid=9756007#post9756007 target=_blank>Originally posted</a> by barjam
Something in my tank eats them....

I am nearly 100% certain it was my YT. When he was introduced he would pick at them and eventually they all disappeared.

What is YT ??
Tiger cowrie which is not coral friendly ,
Anything else will manage hydroids so i don't have to pull & syphon them out.

 

[shred5]

<a href=showthread.php?s=&postid=10143402#post10143402 target=_blank>Originally posted</a> by buffalo123
What is YT ??
Tiger cowrie which is not coral friendly ,
Anything else will manage hydroids so i don't have to pull & syphon them out.

Yellow tang..

Dave