Unknown algae

[TrampledByEwoks]

Hi All! Hoping to get some help with an algae ID. The pictures aren’t great but I have these small maroon dots that have shown up.
I’ve dealt with Cyano before and though this is a similar color I don’t believe that’s what this is. While this new algae was in the tank I had a patch or two of cyano and the usual Chemiclean rid the cyano patches and left the dots unfazed. The dots are hard and very difficult to manually remove. Snails in the tank will rid all algae around the dots but won’t bother the dots themselves.
Any ideas are greatly appreciated!

 

[I never finish anythi]

Coraline Algae

 

[vetteguy53081]

Hi All! Hoping to get some help with an algae ID. The pictures aren’t great but I have these small maroon dots that have shown up.
I’ve dealt with Cyano before and though this is a similar color I don’t believe that’s what this is. While this new algae was in the tank I had a patch or two of cyano and the usual Chemiclean rid the cyano patches and left the dots unfazed. The dots are hard and very difficult to manually remove. Snails in the tank will rid all algae around the dots but won’t bother the dots themselves.
Any ideas are greatly appreciated!

View attachment 2868094 View attachment 2868095

While this has the appearance of coralline, I dont believe it is but rather being a crusty like algae known as Lithothamnions which thrive off of calcium. The ones on the rock will have to be scraped off although of no harm.
The ones on glass should be removed and maget scraper should work, or manual labor using a razor type scraper

 

[TrampledByEwoks]

While this has the appearance of coralline, I dont believe it is but rather being a crusty like algae known as Lithothamnions which thrive off of calcium. The ones on the rock will have to be scraped off although of no harm.
The ones on glass should be removed and maget scraper should work, or manual labor using a razor type scraper

Does this pose a threat to take over the whole tank? Not sure I know of a good way to reduce calcium as I’m not dosing anything and simply doing routine water changes with RO water. I plan to start adding coral over the next few months so maybe the excess calcium is a good thing?

 

[WheatToast]

While this has the appearance of coralline, I dont believe it is but rather being a crusty like algae known as Lithothamnions which thrive off of calcium. The ones on the rock will have to be scraped off although of no harm.
The ones on glass should be removed and maget scraper should work, or manual labor using a razor type scraper

Lithothamnion is a genus in the order Corallinales, making it coralline algae. There shouldn't be much of a difference between the care and treatment of species in this genus and other species of coralline algae.

Hi All! Hoping to get some help with an algae ID. The pictures aren’t great but I have these small maroon dots that have shown up.
I’ve dealt with Cyano before and though this is a similar color I don’t believe that’s what this is. While this new algae was in the tank I had a patch or two of cyano and the usual Chemiclean rid the cyano patches and left the dots unfazed. The dots are hard and very difficult to manually remove. Snails in the tank will rid all algae around the dots but won’t bother the dots themselves.
Any ideas are greatly appreciated!

View attachment 2868094 View attachment 2868095

My guess is that you actually have benthic foraminiferans, which are protists in the kingdom Chromista; growths like these in aquaria are more common amongst these organisms:

Benthic foraminifera. These are filter-feeding protozoans and are harmless. The fibers on the forams are their reticulopodia, which are used for feeding.
https://commons.wikimedia.org/wiki/Category:Homotrematidae
http://reefkeeping.com/issues/2003-07/rs/index.php

 

[vetteguy53081]

Does this pose a threat to take over the whole tank? Not sure I know of a good way to reduce calcium as I’m not dosing anything and simply doing routine water changes with RO water. I plan to start adding coral over the next few months so maybe the excess calcium is a good thing?

No. Like coralline which thrives off calcium, this is a little more stubborn for removal

 

[I never finish anythi]

No. Like coralline which thrives off calcium, this is a little more stubborn for removal

Will urchin eat it ??

 

[vetteguy53081]

Will urchin eat it ??

Likely not

 

[TrampledByEwoks]

Well I am happy to hear that it shouldn’t be harmful to the rest of the tank!