>I also include an equal amount of CaNO3 (~1/4t each per 100g) I meant Calcium nitrate: Ca(NO3)2 Also, sorry about leaving the extra text. I hate it when others do that. Too early in the morning. Neil Frank _______________________________________________ Aquatic-Plants mailing list Aquatic-Plants at actwin_com http://www.actwin.com/mailman/listinfo.cgi/aquatic-plants