Do Zoas use calcium?

[kappaknight]

...well, do they? (specifically for growth).

 

[jmaneyapanda]

I do not believe they do. Unless the softie has the rigid sclerites in the body- ie- leathers etc, i dont think its an issue.

 

[mojo]

Do keep in mind that there should be an ionic balance in the water, so Ca / Alk and their effect on pH does still play a role.