Strontium helping zoanthids?

[daniella3d]

I am wondering what is the effet of overdosing. From one link you posted it seem that strontium can be toxic if present in too large quantity so testing before dosing should be done.

I know for sure in my case that my reef is always low in strontium if not dosing. I guess I will buy a Salifert strontium kit as it seem to be the best kit out there (Seachem too complicated).