I have never seen algae like this! - The Planted Tank Forum
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post #1 of 7 (permalink) Old 05-14-2019, 01:04 AM Thread Starter
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I have never seen algae like this!

Hey everyone,

Can anyone ID this weird stringy algae that grows in a stalking, sort of tree-like manner? I have never seen anything like this before in my experience of the hobby. I added a small powerhead for flow and I saw these some time after that. Looks segmented..

I will throw it under a microscope and post pictures of that tomorrow. Pretty weird stuff!

Thoughts? CO2, aquasky moon, doing ferts weekly, CRS.
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post #2 of 7 (permalink) Old 05-14-2019, 03:26 PM Thread Starter
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Hey all,

Here are pictures of the same algae at 25x and 100x. Interesting stuff. Any thoughts?
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post #3 of 7 (permalink) Old 05-14-2019, 06:01 PM
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@LeKing I have no idea what that is. I just spend far too long looking through google images, lol! It almost looks like super long staghorn. What kind of texture does it have?
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post #4 of 7 (permalink) Old 05-14-2019, 06:46 PM
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I get this in my tank - it's greyer than most algae, right?

It only appears in my window tank and I'd hazard a guess at it being in areas with less flow. The tank is only fully lit from 5pm-10pm but receives varying amounts indirect sunlight from about 5am until 9pm. Definitely didn't notice it during the winter, and will see if it worsens as the days get longer. I'm sure it's something to do with receiving too much light as my ferts are pretty minimal. No CO2.

I hope you find out what it is!

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post #5 of 7 (permalink) Old 05-14-2019, 07:03 PM
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very random guess here but maybe a type of Melosira? i say that because of the "string of beads" look but after looking up microscopic images of several species im not seeing any that look like yours.
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post #6 of 7 (permalink) Old 05-14-2019, 07:12 PM Thread Starter
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It has a sort of slippery and slimy, gelatinous feel to it when I pull it out of the tank. breaks easily. It does not seem to be fibrous or leafy in texture.

I ordered some Otocinclus yesterday, I am curious if it will be edible to them. The crystal shrimp don't seem to be interested in it at all.

It grows fast!! Hopefully it doesn't take over my tank entirely. When I try to remove it, it breaks up and probably helps propagate it. Probably came in as a stow away on some moss I recently received.
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post #7 of 7 (permalink) Old 05-23-2019, 08:56 PM
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@LeKing any updates on this? Did you manage to fight it off or figure out what it is?
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