Gidday everyone... I've decided to write in a new post the summary of my action and findings of my previous post www.terrylove.com/forums/showthread.php?46184-CR100-with-KDF-85 since it started to get pretty long. Even if I received a complete new set of media from Greenway, I wanted to know what I could do with my current one that was only 10 months old. I opened-up the tank and mix/break the top which was the KDF with a 1" wood bit with a long extension, I was able to get to the CR100 and bring it up on top and mixing it with the KDF. Gave it a powerful Back wash with no DLFC, I have a basket screwed-in at the bottom of the valve/top of tank to prevent the media to escape. This was full pump 9-10GPM, and than re-installed the DLFC control(5.2). I wanted to make sure to remove any Iron Bacteria, so I mixed a gallon of javex/water and unplugged the plastic pipe going to the salt container and threw the softener in REGEN and skipped to the brine mode to suck my mix. I did let it sit for about 2 hrs. and also wanted to clean the pipe, so I opened the tap until the javex smell was present. I followed-up with another Backwash. Been 2 weeks now and no smell... SOME FINDINGS. I called Crystal right and they confirmed that the CR100 shelf life is in his word "infinite" and so as for the KDF.....So I have a set for when ever I will need a re-bed. To unlock the program... As if you are dialing a telephone it's minus,next,plus,clock To lock it back, same deal. Next and minus together for 5 seconds will get you in to change the parameters and 'Next' will show you the different ones. So this is where you can change your backwash/rinse/ etc..... It shows also what the chlorinator is set at,but, cannot change it from the panel, still looking for an answer on that one. Next and Plus together gets you to select your time for regen/days between/time .. A table spoon of CR100 weights 10 gram and KDF is 40 grams.