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Hydroids?
07-13-2016, 05:20 PM
  #1  
So based on a bit of googling I've decided I have hydroids on my glass.


^not a pic of my tank but very similar.

In any case, everything I've read seems to say these guys are harmless, but they also seem to say it's related to a new tank. That part interests me since my tank is about 2 years old at this point. The only recent change was the switch over to RODI. Any opinions on if that would effect these guys?
 
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07-17-2016, 06:25 PM
  #2  
can you get a picture of the actual "hydroid" on your glass?
 
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07-17-2016, 06:26 PM
  #3  
I'll give it another shot but getting a focus was extremely difficult.


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07-17-2016, 06:28 PM
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07-17-2016, 07:40 PM
  #5  
Yea man cant really tell anything from the pictures.
 
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07-17-2016, 09:27 PM
  #6  
Yea I figured. They do look like the initial picture I posted. Was just curious on people's thoughts as to why switching to rodi might bring them back. Assuming that's what they are.


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07-18-2016, 10:48 AM
  #7  
your initial photo is something I have seen multiple times in reef aquariums. I would just wipe them down.

I've never heard of a hydroid problem, and I assume in a mixed reef/garden variety reef they probably don't present a major problem.

I am going to assume here so take it for what its worth, but unless you are keeping acropora/sps, or you unless you see a lot of them, they probably aren't terrible. If you have an sps heavy tank, yeah, maybe you need to eliminate large colonies.

they also need nutrients so... I dunno if that helps, good luck
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07-18-2016, 10:49 AM
  #8  
http://www.reef2reef.com/threads/med...should.159020/
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07-18-2016, 07:40 PM
  #9  
Thanks for the info, mostly LPS and some softies here.
 

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