I have 25g non-CO2 set-up. pH 7? GH 5? KH 0 If I add 2 tsp. sodium bicarbonate, to increase KH by 4?. Dose this solution only work on CO2 systems? Will this cause problems in some unforeseen way? Steve _______________________________________________ Aquatic-Plants mailing list Aquatic-Plants at actwin_com http://www.actwin.com/mailman/listinfo.cgi/aquatic-plants