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What are these growth?


Azedenkae

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So there are some nodular growth on my macroalgae, which I am rather confused about. Just wondering if anyone has any ideas:
d5b8cf57-48da-42b1-90aa-af51c384e8a4_zps
And the original for comparison:
706D912B-246D-4C09-AD67-485ACE8C0431_zps
I really have no idea what they are. The tank is currently cycling. I found these washed up on the beach, so I tossed them into the tank.
Further details on my tank and tank parameters so far are here. Essentially there's been quite a lot of spikes in nutrients I am sure, as I have been excessively adding pureed seafood to my aquarium as part of the cycle. :)

 

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They are naturally occurring growths on the stem

 

I see clearish areas on the algae, are they mushy?

Cool. What are they though? I mean, what do they do?

 

The clearish areas are now hollow (the algae must have died inside, leaving just the epidermis or whatever it is. Some green algae has colonized the inside of the tubes. >.<

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If only I know their function, sorry I don't know the purpose, I just know it doesn't hurt the algae and is normal in some species. Let's hope someone who knows will comment what the nodules are good for. Also lol that green can be desperate, I hope your macro doesn't die any more.

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Lol, I hope so too. As in someone coming in and telling me the function. I'm really curious.

 

I'm hypothesizing that they may be new growths - as in forming new branches, but it is a simple guess.

 

There were originally more red, but it receded quite a bit over the first few days. That also broke up the macro into a billion pieces that now float all over the tank. But the recession has abided, and now there are the growth.

 

Eh dunno. >_> I'll keep posting updates and hoping for answers, but until then, will just keep observing it.

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My macro broke up a bit also, but now its seemingly working well. Maybe it's their response to shipment? Also member William Halligan has had issues with red macro, but unfortunately his went all the way dead. Hope they are branches going for more growth for you.

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Hopefully. I picked mine up from the beach so no surprises that they are half dead lol.

 

Also temperatures are crazy atm. My tank is sitting on 28-30 degrees. Luckily I am still cycling. XD

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Hopefully. I picked mine up from the beach so no surprises that they are half dead lol. Also temperatures are crazy atm. My tank is sitting on 28-30 degrees. Luckily I am still cycling. XD

as long as it doesn't leave the range of the ocean area you found it it should be fine.

 

Those nodules are air bladders. They keep the macro upright, growing towards the surface.

I didn't know reds made air bladders, I know brown macros, but not reds. You learn something new daily I guess.

 

Some of my red macros grow upright without the bladders, why the difference?

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There are a number of species of red algae, with different growth strategies. Those in shallower water don't need air bladders to find the surface. Those that grow in deeper water do.

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