K, so I'm using a Seachem product called Purigen if you use it then you know what it is & it say's that it's exhausted when it turn a "deep" brown. When I chkd it was brown & since it's in a large can fltr & I was cleaning it I went ahead & pulled it out to "recharge" it. It may not have been the deep brown that is only briefly discribed, however it was diffently a brown color no question. When I mixed the bleach & water to recharge it @ 1:1 ratio it was suppose to soak 24hrs. then another 8hrs. in a dechlorinator water mixture, but w/ in 20 min. of soaking it was yellowish again as it was new, so my ? is should I not worry soaking it 24hrs. & pull it now or just go ahead & go w/ the full soak time. What if any has been your experience w/ this product? Thank you for all your comment's & help!