03-03-2006, 07:49 AM
Here is a cool site and makes it easy to understand for those PH challeged and water tank divers like me. LOL had no idea!
http://www.watersystemscouncil.org/VAiWe...1585PH.PDF
mella l
http://www.watersystemscouncil.org/VAiWe...1585PH.PDF
mella l
mella l
Art and Science
bytheSEA
Art and Science
bytheSEA