Hello plant people, esp. Paul Wallace. I won the Potassium Nitrate (KH2PO4) and and the Mono Potassium Phosphate (KNO3) at the BAP awards in November I think. How would you use that to dose a 100-gallon (probably 80-gallon really)? You said something about traces, is that what are called micro nutrient traces? Here's the link to it: http://www.gregwatson.com/proddetail.asp?prod=CSMPlantex1. I think I am fine on iron with the red rock sand/fluorite substrate. The Sears Conlin PMDD formula has Plantex CSM, MGSO4 (is that Epsom salts?) + 7H20 (do I need to mix it with water first?), K2SO4 (Potassium Sulfate?), then KNO3 (Potassium Nitrate). What shop sells the Gregg Watson traces and other stuff? What level of CO2 is good for the plants and safe for the fish? Susan _______________________________________________ GSAS-Member mailing list GSAS-Member@thekrib.com http://lists.thekrib.com/mailman/listinfo/gsas-member