Can I put this in my soil?

http://htgsupply.com/viewproduct.asp?productID=47591

This is the powdered form of pH down that General Hydroponics makes. I was wondering if I could mix that with my water and feed my plants that way.

yep, sure can.

ph up or down is used to bring you water or mix to you desired ph leavel. always ph after mixing your fertz, and check your phout the drain every week or so. soil you want a ph of 6.0 - 6.5. good luck

thanks everyone