Texas rock turning green?

[Chiapet29]

My Texas holy rock has green spots on it, is this algae? My pleco keeps a good job of keeping the algae to a minimum but the rock has remained the same for awhile now, I noticed the same thing when I introduce various sea shells to the tank that I collect along the beach shore, after a few months they would eventual turn green, Is this common, or is it something I should be concerned about?

 

[A201]

Nothing to worry about. Eventually all rock, including Texas Holey rock gets a coating of algae. Personally, I think the THR looks better & more natural with algae.
My main tank is full of big chunks of THR. I recently added a new, very white THR rock. The other THR's in the tank were that white several years ago. Lol.

 

[krichardson]

Agreed and good looking tank.

 

[duanes]

Agree with the others, very normal, and good for the tank, because algae uses up nuisance nutrients that degrade water quality.
Many fish such as non-pisvores cichlids, and live bearers eat it, and is a significant part of their diet.
I try to promote its growth on rocks and wood whenever I can.

 

[Chiapet29]

Nothing to worry about. Eventually all rock, including Texas Holey rock gets a coating of algae. Personally, I think the THR looks better & more natural with algae.
My main tank is full of big chunks of THR. I recently added a new, very white THR rock. The other THR's in the tank were that white several years ago. Lol.View attachment 1361765

Thx good to know, nice looking tank btw

 

[duanes]

Below are 2 videos shot in Mexico where the rock scape is very similar to Texas Holy Rock, in that is heavily calcium based.
In shaded areas red and brown algae are natural, in sunlit areas, green is predominant.
Azul imovie edit
Eden2