yeah, that would be a good idea !
build in the recovery right into the product
and it would be a win win situation ...
and maybe people would actually use their fixer
to its capacity !

but then we'll have to hear:

" they are making me buy that too ?! forget-it ! ... i'm going to get my fixer
from the fertilizer guy or the pool shop ... or...
can i use sea water or salt or baking soda or all tempa cheer for fixer, how about KELP ? "