hi doremus

over the years kodak has done a great job contradicting itself

(with septic) kodak recommends not dumping any photochemistry down the drain
http://www.kodak.com/global/en/profe...bs/ak3/ak3.pdf
it is from 2005 --- j-300 is from 1999 ..

of course it depends where you live that should determine what tack you should take ..
and as always ... YMMV

john