If you really crank the CO2 the aquatic plants definitely increase the conductivity. Vaughn H . On Sep 28, 2006, at 9:07 AM, Thomas Barr wrote: > So do aquatic plants increase or decrease the conductivity of > the water? _______________________________________________ Aquatic-Plants mailing list Aquatic-Plants at actwin_com http://www.actwin.com/mailman/listinfo/aquatic-plants