I generally run a silica wick in mine and I make sure I have enough silica in the bottom of the tank to cover the entire base to make sure it wicks all of the liquid up.
vaping is all subjective and silica might not taste right with you but for me,it works well and is basically the only other wick I use other than Ceramic rope,which I have not found a way to get it to wick in the RSST,yet.