Quote:
Originally posted by JetCat USA
UPDATE
we've got a winner, 0.26 still after another 5 hrs, i think we've hit exhaustion. seams that for the average Joe not trying to get all scientific and precise about it, 2 cups of PhosBan will pull 2.68ppm of PO4 from 225g of water, thats about an average of 1ppm/cup/100g not to shabby.
with the comment:
i think I'll just dump the media out and reload with new, no need to spend the time testing for leeching and i can't seam to find anything on the baking the media so it'll just add to the growing pile in the back yard 
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It would have been an interesting test, to see what your spent GFO did in a small fresh batch of salt water for a few weeks to see if it did leach back. I might have to try this next time. I'm curious.