Not sure what this is... Maybe Hydra? Any help appreciated :).
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Old 02-28-2015, 10:55 PM   #1
MikeDVB
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Not sure what this is... Maybe Hydra? Any help appreciated :).


Edit: I think it may be 'hydra' - I stumbled across that just after posting. Confirmation would be appreciated.

Hey guys...

I noticed something new in one of my tanks today and I have had no luck Googling it and was hoping to get some feedback here.



It is worth noting the wife has been handling feeding - while I don't know what these are I think they are a side-effect of way too much feeding... Let me know if I'm wrong.

Thanks!
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Old 02-28-2015, 11:11 PM   #2
Culprit
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They look like Bryozoans . I could be wrong though,hard to tell from the pic.
Colonial creatures. They look a bit like corals with the hard skeleton structure of the colony. The individual creatures, zooids, are inside their own small part of the colony and they eat small particles (phytoplankton, zooplankton) floating in the water by guiding them (and water) towards their mouth opening with the fan like tentacles. If disturbed, the zooids will retract their tentacles inside the colony walls. They are harmless .
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Old 02-28-2015, 11:16 PM   #3
MikeDVB
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Awesome. I'll leave them alone then ;-)
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Old 02-28-2015, 11:39 PM   #4
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They look like beard algae just starting up. To me anyway.
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Old 02-28-2015, 11:48 PM   #5
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There isn't any algae anywhere else in the tank. I did have some algae problems but I turned back the lights 10% and the algae got eaten and hasn't come back.

It is over near my filter inlet and co2 diffuser. I suppose it could be algae making good use of the co2 on that side of the tank.

The diffuser is right below a circulation pump that causes the co2 bubbles to circulate in the whole tank.
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Old 03-01-2015, 12:49 AM   #6
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I had those as well when I first started my current tank, they went away after the tank finished cycling and I cut back on feeding. I thought they were algae too until I started poking them and they started crawling along the tank walls :O
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Old 03-01-2015, 02:24 AM   #7
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Quote:
Originally Posted by Powchekny View Post
They look like beard algae just starting up. To me anyway.
It also looks like the start of BBA to me.

BBA for me tends to start off as small, fuzzy punctate points before growing into larger tufts.
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Old 03-01-2015, 05:55 AM   #8
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Quote:
Originally Posted by Culprit View Post
They look like Bryozoans . I could be wrong though,hard to tell from the pic.
Colonial creatures. They look a bit like corals with the hard skeleton structure of the colony. The individual creatures, zooids, are inside their own small part of the colony and they eat small particles (phytoplankton, zooplankton) floating in the water by guiding them (and water) towards their mouth opening with the fan like tentacles. If disturbed, the zooids will retract their tentacles inside the colony walls. They are harmless .
Ditto.
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