OK I 'e-mailed seahchem;
"Could you please tell me if any of your Flourish products would be suitable for promoting growth of seaweed in a saltwater aquarium? This is not a reef tank, no corals.."
Reply is:
"It would not be unsuitable, but we've never tried it in this application so we couldn't guarantee positive results although there is no reason to expect any negative results."
Anybody have any thoughts?
--