If you want something that works, that is non chemical, and you cannot have plants added, I have solutions for that also. There are many things you use in the tool box, but I think BS has gotten more play than it deserves.
From the information available on the internet, and the few papers thatnon-biologists like me can read, I can't find anything that says BS doesn't work in the same way as Excel does. After all, I can't see that anyone really understand how any of them work? The active ingredient in Excel is, according to Seachem, "polycycloglutaracetal". A Google-search "polycycloglutaracetal -excel" returns no hits. A search on ISI Web of Science produces nothing. I can probably do very well without both Excel and BS, but that doesn't stop me from being inquisitive :-)
Best regards, Kai
_______________________________________________ Aquatic-Plants mailing list Aquatic-Plants at actwin_com http://www.actwin.com/mailman/listinfo/aquatic-plants