I wouldn't get too fixated on try to oxidise your K1 media if it's not convenient. Putting in shiny new K1 will only take a few extra days to become...
Thanks for the info. I wasn't sure if anyone has info on the manufacturers for the large ones that you would see at koi suppliers where they would be...
John is very knowledgeable, everyone should have his web page book marked. His web page should have been written in book format, the amount of effort...