Alright so good news is it's now flushed!
I set up a clamp lamp as recommended with a 75w bulb in the cubby the tanks sit in, and a guy here ended up having a snake so we used that through a hole in the stinky slinky to yank a BUNCH of stuff out that didn't break down right.
So I'm using the Scotts RV faat dissolve TP (I think thats the name of it) from now on, and anything more than that is going into the trash.
The 3/4th full light is stuck on whenever I check the fullness of the tank so I think it's dirty.. or isn't working right. Tank shows 1/2 full now. I dumped a bunch of water in there along with vinegar to help flush everything out.
It's been freezing cold (for this area) the past few days so it took a bit longer to get to this. But it's done now, and hopefully everything will flush properly.
Tomorrow after I get home, I'm probably going to use a wand to spray it out from the top, then do a proper start with that TankTechRX enzyme stuff. See how it goes. A lot of people swear by it, and it was working great until I used the wrong TP.
Thanks everyone for your help. It's been a big help in getting everything resolved. I've learned a valuable lesson.
Quick question --
What's a good way to tell when the tank is ready to be dumped?
