Immediate Algae identification!! - The Planted Tank Forum
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post #1 of 5 (permalink) Old 06-05-2020, 07:44 PM Thread Starter
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Immediate Algae identification!!

A few days ago I purchased some more RCS from a local breeder. Today I woke up to find this strange algae growing on the side of the filter. I sat and watched the shrimp for a while and one came and started grazing on the algae for about five seconds then jumped off and swam away. It happened a few more times with the shrimp jumping away. The algae seemed to sway and move randomly with and against the current. If anyone has any idea about what it may be please let me know soon. It is very strange and I’ve never seen it before. Thanks, InvertGuy

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post #2 of 5 (permalink) Old 06-07-2020, 01:41 AM
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Hard to say with a blurry photo; do they look like they have little tentacles? They might be Hydra if so
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post #3 of 5 (permalink) Old 06-07-2020, 01:54 AM
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I agree thats not Algae
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post #4 of 5 (permalink) Old 06-08-2020, 05:06 PM Thread Starter
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No it doesn't have any tentacles, this isn't hydra. I have seen hyrdra before, and it doesn't grow in a patch like that. They spread out and are seen everywhere in the aquarium. The things are kind of bulbous, but not like any kind of eggs. It is still in the same place and it hasn't spread or multiplied. I tried scraping it off with a spoon and absolutely nothing happened. I didn't get any off and it kept swaying like it was doing before. The shrimp are having nothing to do with it, so I am not that worried as long as it doesn't spread or harm any shrimplets like hydra does. Thanks for the reply, if anybody knows anything else about this funny thing, please reply and let me know. I will keep you posted about this. Never seen anything like it before.
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post #5 of 5 (permalink) Old 06-16-2020, 07:01 PM Thread Starter
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So, I know this topic is over a week old, but I promised I would update what happened with the weird algae. Basically, I was away for 4 days and when I came home, I found that the funny looking algae had completely vanished. What was even weirder and more worrying was the fact that there were now "Actual Hydra" all over the tank glass and plants. What worries me the most is that while I was away my mamma shrimp had a batch of babies and I'm afraid the hydra will prey on them. I know they are hard to spot, but I only see 2-3 at a time. Any suggestions as to what treatment I can put in the tank to kill the hydra but not harm the shrimp? Homemade? On the market? Type of fish or snail? I don't want to remove them manually, because I'm afraid that I will squish or stress out the hard-to-see newborn babies.
Thanks, any info will be tons of help.
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