On 2007-08-29T18:21:33+0100, Stuart Halliday wrote: > Pardon my ignorance Jerry, but how does one relate ppm to ml per litre? > Is there a formula? :-) http://delloyd.50megs.com/photo.html /Allan _______________________________________________ Aquatic-Plants mailing list Aquatic-Plants at actwin_com http://www.actwin.com/mailman/listinfo/aquatic-plants