I vape Grenada almost exclusively through a Fogger V4, and have one dedicated to that juice only. This stuff will ruin a plastic tank in less than a few hours, so all my tanks are glass now. I wicked it with Rayon on Sunday, and it performed incredibly well, to the point where I changed all my other attys over to it with similar results. I noticed yesterday in my fourth tank through it with rayon wicking, the juice had gotten considerably darker over the course of the day. It didn't seem to affect flavor, so I kept vaping. When the tank was empty, I took it apart and checked the coils and found the wick to be a little gray where it gets close to the coil. I figured I could expect something to happen to it, so I wasn't terribly concerned and put it back together and filled it up. Today, I can see little darker streaks in the liquid after leaving it sit on my desk for 30 minutes or so. I've vaped Grenada in this tank using cotton yarn wick since the very first Fogger V4s came out about 6 months ago, and for about another 6 months prior to that in Aquas, and I've never seen the juice do this. I'm also noticing a little bit of a chemical taste, however, I'm not convinced this isn't something I may have talked myself into out of fear that Grenada is dissolving my rayon wick. The question, though... Is Grenada dissolving my rayon wick?