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Ideas on what this is on my rock?


dhampton114

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The hydroids is possible, they are too small to make out that clearly, but they do appear to be a stalk, with a head and then tentacles as near as I can tell. Are these a nuisance in a fowlr tank, and if so, any ideas on how to get rid of them? From what I have read about them, they seem to be a terror on corals, and highly difficult to remove.

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The hydroids in my tank went away on their own after a couple of months.  I'm not sure why.  It was during a time my tank was going through different phases with green hair algae, wire algae, and bubble algae.  I could see my cleanup crew working on the various algaes, but they never touched the hydroids.

I now have several long digitate hydroids that only come out at night.  

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On 4/3/2019 at 11:53 AM, dhampton114 said:

The hydroids is possible, they are too small to make out that clearly, but they do appear to be a stalk, with a head and then tentacles as near as I can tell. Are these a nuisance in a fowlr tank, and if so, any ideas on how to get rid of them? From what I have read about them, they seem to be a terror on corals, and highly difficult to remove.

They are a pain, but I've found increased flow gets rid of them

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