Hey all you temperate and coldwater
trailblazers I have a question about coraline
growth in coldwater tanks. Do you experience
significant growth or slow growth? What kind
of lighting intensity or if any? PH and additives
such as Purple Up, B ionic or Purple Tech, do you
use them. Is it the same process as tropical
tank coraline growth? All knowledge and tips
would be great!

H

I have some, it has mostly stayed the same, maybe a little growth. The bright pink stuff that is. The more brown calcareous algae I have is growing a lot faster though. Then again I have pretty intense lighting for a coldwater tank and some of the nuisance algaes attempt to take hold.

I have few pieces of the pink to purple and also the branching
type. They seem to turn white when in bright lighting or it could
be eaten by my chiton. I did notice that the coraline which are
in shaded areas tend to keep their color more. I have the red version
of coraline which has no problem growing anywhere.

H.

Interesting. Where I collect there really isn't that much purple coraline, its more of a brownish color haha, but it is still there in some places. Huh mine hasn't bleached...