Think about this for a minute: those "flushable" wipes are packaged saturated in a soap solution. What keeps them from breaking down when sitting there in that solution for months? I keep a a package of disinfectant wipes in the wet bay of the motorhome. It is about 2 YEARS old, and the wipes show no sign of deterioration!
Call your local waste treatment plant and ask what THEIR opinion of "flushable wipes" is.
Then call your County (or University) Extension Service and ask if Rid-X really has any value for any application. Chances are, they will tell you it is not needed.
I have done a small amount of research on Rid-X, and IMO, based on what I have read, it is a waste of money.
ESPECIALLY in an RV holding tank!