how long does it take for hydroids to.....

[nemofish2217]

die off of a rock if the rock is sitting in a bucket of fresh water.... i have had a rock in the bucket since moday night....

my second question, is if when you take the rock out (i need the bucket for a water change) is it possible to let some of the hydroids back in your tank even if you rinse the bucket out really really really well? thanks for the info...

 

[lebowski]

Why would you want to kill hydroids..

Rather harmless creatures, and actually help out...

But I see where you're comin from, I had a massive reproduction of these things and they were everywhere! They went away over time though.. They always do...

 

[nemofish2217]

they are harmless? i guess i had heard that they would cause devistation to corals in a reef tank.... am i thinking about the same thing? Little polypy looking things? look kind of like small feather dusters but more brown and smaller?

 

[Anemonebuff]

They bother some corals. I have not noticed a problem yet. But some report problems. They are a relative of jellyfish.

 

[nemofish2217]

so, basically, even though i have taken the rock with the visible hydroids out of the aquarium, they are probably still in my water column in the free swimming stage... am i correct?

and is it true that they will eventually go away?

 

[jimroth]

Fresh water is kinda hard on the ol' live rock. In case it comes up again, a month in a dark container of saltwater worked for me.