What has four tenacles...... - The Planted Tank Forum
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post #1 of 37 (permalink) Old 12-27-2013, 02:11 AM Thread Starter
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What has four tenacles......

I have something growing in my Cardinal shrimp tank....

The base is attached to my Lava rock and Dragon stone and is the shape of a cross. The top looks like it has four tenacles just flowing in the current and are about 1/2" long. It is tan/off white colored....

What am I???
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post #2 of 37 (permalink) Old 12-27-2013, 02:13 AM
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probably hydra? harmless to adult shrimp but will multiply so I would remove just to be safe. They are harmful to small inverts though, like baby shrimp.
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post #3 of 37 (permalink) Old 12-27-2013, 02:14 AM Thread Starter
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best way to remove them or get rid of them. Now that I found two, I have found a lot more!

do you know the full name of them so I can research?
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post #4 of 37 (permalink) Old 12-27-2013, 02:16 AM
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def hydra. I have used dog de-wormer to kill them with great success
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post #5 of 37 (permalink) Old 12-27-2013, 02:16 AM
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post #6 of 37 (permalink) Old 12-27-2013, 02:19 AM
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Quote:
Originally Posted by wikipedia
Hydra viridissima, or the green hydra, is a species of freshwater hydroid polyp in the genus Hydra found widely dispersed in the northern temperate zone. It is a common organism found in still waters from early spring to late autumn.
http://en.wikipedia.org/wiki/Hydra_viridissima



Video from my microscope of a hydra.
[youtube]http://www.youtube.com/watch?v=J6PekqM_9Yw[/youtube]
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post #7 of 37 (permalink) Old 12-27-2013, 02:39 AM Thread Starter
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Thanks everyone!

One question regarding Eric's thread he posted.... is that a one time treatment using the 1g bag divided into 10 equal amounts but only use each equal amount per ten gallons?

like my tank is 30 gallon so I would only use 300mg, right?
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post #8 of 37 (permalink) Old 12-27-2013, 03:39 AM
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It is a one time treatment. Fenben is potent against hydra.

Just be sure to do water changes a few days after treatment, the stuff can be harmful to fish (especially young ones) if left in the tank long term, though not if removed within a few days.
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post #9 of 37 (permalink) Old 12-27-2013, 03:47 AM
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Just reading the title id say my ex... but in an aquarium, idk
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post #10 of 37 (permalink) Old 12-27-2013, 03:50 AM Thread Starter
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Originally Posted by cjskier View Post
Just reading the title id say my ex... but in an aquarium, idk

HAHAHA
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post #11 of 37 (permalink) Old 12-27-2013, 04:22 AM
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Quote:
Originally Posted by Titansfever83 View Post
Thanks everyone!

One question regarding Eric's thread he posted.... is that a one time treatment using the 1g bag divided into 10 equal amounts but only use each equal amount per ten gallons?

like my tank is 30 gallon so I would only use 300mg, right?
correct.

And i hate seeing people say that hydra are harmless to adult shrimp. Well they're not, they still will sting adult shrimp, and while that doesn't seem very harmful, when hydra overpopulate a shrimp only tank (no predators to kill them), they will quickly turn every surface into a stinger. What could be more stressful to an adult shrimp than that?
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post #12 of 37 (permalink) Old 12-27-2013, 06:26 AM
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post #13 of 37 (permalink) Old 12-27-2013, 06:35 AM Thread Starter
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Originally Posted by thelub View Post
Spixi snails love hydra too

I have Poso, yellow rabbit, and minis in the same tank. Don't wanna add the Spixi.

Thanks for the info!
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post #14 of 37 (permalink) Old 12-27-2013, 01:54 PM
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Originally Posted by mordalphus View Post
correct.

And i hate seeing people say that hydra are harmless to adult shrimp. Well they're not, they still will sting adult shrimp, and while that doesn't seem very harmful, when hydra overpopulate a shrimp only tank (no predators to kill them), they will quickly turn every surface into a stinger. What could be more stressful to an adult shrimp than that?
Never thought of it like that. Good call and I'm glad I (hopefully) killed them too

GUYS will fenbend. Kill his snails?

Sent from my VS840 4G using Tapatalk
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post #15 of 37 (permalink) Old 12-27-2013, 02:47 PM
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My ramshorns were fine with it.

I would like to add that fenben is light sensitive- so shut off your tank light for a day, and if you have a mechanical filter to remove the carbon for a couple days.

For hydra, I do half the dose in my tenners. .05g takes an extra day or two, but gentler to the tanks and just as effective.

RAOK Club and BBRR Club! My thinking has been invert-ed!
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