Quick macroalgae question!

[PokeFish]

Hey. I just had a quick question about Halimeda. When they go sexual/turn white, is it usually because of NO3-/PO43+ or because of calcium? thanks

 

[Randy Holmes-Farley Verified Community Expert]

Hey. I just had a quick question about Halimeda. When they go sexual/turn white, is it usually because of NO3-/PO43+ or because of calcium? thanks

I doubt you will find a definitive answer.

There's some ambiguous discussion of it here:

http://reefkeeping.com/issues/2004-04/nftt/index.php

 

[dvgyfresh]

I think there is too many variables , but usually it means it is dying in some may , whether that be lack of light , low nutrients, no trace elements, very low calcium ect