Colonial Hydroids

[SSalty]

I found a couple small colonies of colonial hydroids on my rock. Is this common in reef tanks? Or am I the unlucky one?

How should I kill these?

Thanks.

 

[tmz]

I don't know how common it is but I have them ( at least I have small brownish daisy like polyps reffered to locally as hydroids) and they are a pain . I've seen them take over tanks(fortunately not mine. I don't know of a proven method to erradicate them. I think you have to be persistent. Kalk paste works. I usually take out a piec if I can and scrape the rock down with a dremmel tool. When this is impossible I make a thin patch of aquastick grey expoxy putty and lay it over them.

 

[Radioheadx14]

i got rid of a small patch (maybe 5-8 stalks) by burning them with a lighter. worked, but it bleached the coraline form the LR in that one area... still better than hydroids though.

 

[mille239]

Here was my approach:

Die Hydroids!

 

[mille239]

Here was my approach:

Die Hydroids!

 

[SSalty]

I won't be pulling out my rock that has them on it. Is it underneath everything else. Would Joes Juice work? The same stuff you use on aiptasia?

 

[S_Stoney_S]

joes juice has worked fine for me. Had a few groups of 5-10 little fella's each. Got a bit trigger happy with it on one though and I have a beautifully white patch on the rock. Cleanest bit in the tank

 

[mille239]

With Kalk Paste (aka Joe's Juice) you may find you need to repeat the application a coulpe times, as I've found they come back (albeit in smaller numbers)in a couple weeks. good luck!

 

[Ritten]

I had better luck with Mrs. Wages Pickling Lime mixed with RO because I could get a thicker paste than with the joe's juice.

 

[VaderWS6]

Hydroids sting the hell out of me when I accidentely brush against them. :mad2:

 

[mildew]

Not sure if I had "colonial" hydroids, but I sure had hydroids, 2 types. One of them took over the lower part of the tank, killing and damaging lots in the process. I was feeding lots of newly hatched brine, one of hydroids favorite foods. I'm not sure if I starved them out, but they are now gone. I quit feeding everything except the fish and they got only mysis shrimp and in about 3-4 months the hydroids were gone.