Greenish coralline

[MrDJeep123]

How long does it typically take coralline to change colors to that nice reddish purple?

 

[jasonp87]

I have both types in my tank, neither changes color, they just occupy different areas. I guess eventually one could grow over the other but that hasn't happened to me yet.

 

[Big Larr]

I have the greenish color kind growing on glass as well but usually scrape it off because I don't want it to take space that the purple coraline will grow and I don't think the green kind will change to purple usually the purple starts as white to pinkish for me

 

[Big Larr]

I would like to know if the green kind is actually coraline type of algae or just something different

 

[mike007]

I have never personally seen green coralline algae most of the time it is reddish or purplish Are you sure it is not green algae?.

 

[Big Larr]

Not sure but it's not hairy at all looks more like an encrusted type with greenish and white color

 

[jasonp87]

I have never personally seen green coralline algae most of the time it is reddish or purplish Are you sure it is not green algae?.

I have actual green coralline in my tank. It grows just like the pink stuff. Starts out as a small circle and spreads out. I have some green and pink that is near each other but nothing overlapping yet. However, my green doesn't grow on my glass, only on my rocks and acrylic overflow, not like the pink that grows everywhere.

 

[Big Larr]

Sounds like the green in mine but mine is on the glass

 

[mike007]

Sounds to me It might be green film algae. What are your water parameters ? Have you checked your Phosphates?

 

[jasonp87]

Sounds to me It might be green film algae. What are your water parameters ? Have you checked your Phosphates?

Definitely coralline, it's calcium based, I could tell when I have scraped it off in the past. The pink type tends to dominate the glass not sure if that is what keeps the green type away or not. It may just like slightly different lighting. My phosphates are higher right now but even when they were nonexistent I had the green stuff. Also, when i go for a while without dosing calcium its growth slows, just like the pink type, when I dose it picks back up.

 

[Big Larr]

Yeah my phosphate was not detected either when growing in mine

 

[MrDJeep123]

Photo for reference. This is growing mainly on my left hand side pane next to the mangroves. I also realize that there are different species. I wonder if I have more predominant species than the other.

 

[jasonp87]

Good pic, does it come off just by brushing with your hand or do you have to scrape it off. Also, if it turns white when dead and leaves somewhat of a calcium skeleton it's coralline. The pic does look like coralline with the older, darker parts in the center and what appears to be some dead colonies.

 

[Big Larr]

Awesome that's exactly what I've had and it does have to be scrapped off and turns white when dried out

 

[MrDJeep123]

Good pic, does it come off just by brushing with your hand or do you have to scrape it off. Also, if it turns white when dead and leaves somewhat of a calcium skeleton it's coralline. The pic does look like coralline with the older, darker parts in the center and what appears to be some dead colonies.

It's calcareous, so scraping it off works best. I'm 99% sure it's coralline. It's kind of funny, I wanted the purple to grow in other past tanks, never would. Now I want it to grow, I grow the ugly-ish kind. lol The white parts is where the urchin has ate.