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This is a discussion on hydra within the Beginner Freshwater Aquarium forums, part of the Freshwater Fish and Aquariums category; --> Just noticed I have some what appear to be hydra in my tank (very small, i think it came in with the hornwart I ...

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Old 11-12-2010, 05:46 PM   #1
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Just noticed I have some what appear to be hydra in my tank (very small, i think it came in with the hornwart I bought a few days ago).

Will they eat molly fry? or am I ok just to leave them?
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Old 11-12-2010, 06:01 PM   #2
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Newborn fish and shrimp fry are in danger if you have hydra in your tank,
Their tentacles sting, making it easier for them to bring the fry to their mouth.

I would recommend eradication the sooner the better for the safety of all inhabitants especially the young ones.


Last edited by Chicklet; 11-12-2010 at 06:04 PM..
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Old 11-13-2010, 07:56 AM   #3
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I read about some of the ways to get rid of it, but most of them wont work without killing my fry anyways ( I have some fry in the tank and some in a breeding trap), raising the temp seemed to be the best option but I won't be able to remove all the fry that are already in the tank.

But I did remove the breeding trap and rinse it with hot tap water for 5 min (seemed to have helped)

I am going to refrain from feeding the mollies for a few days because they seem to be eating the hydra.

Hopefully the fish grow quickly...

I know that hydra is bad but man its so cool to watch.
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