Thank you to Xtreme, after all this time and wicks I now run Lily Sugar n Cream in all Spheroids. In fact, the original that I was giving updates lasted almost 3 weeks. I found the fluff contact pulled many cotton hairs out. Although cotton is not as structurally sound as my Eko or silica, I am moving completely away from all medium except cotton.
If you are looking for good cotton balls check out Walgreen organic. I still use a bit of cotton from pharmaceutical companies as well.
That's exactly what I have been using in my kayfun. Organic cotton from Walgreens. The ekowool is designated for protank heads for now. Cotton is AMAZING!!!