Does anyone happen to know the rate of flow of a gunge tank? Like, how many litres flows out of it in a second? (Or any other measure of quantity per time)

I know, I know, it's going to vary wildly based on size of nozzle, thickness of gunge, etc. But, a rough ballpark figure for an average gunge tank.

Candy Custard and Henry have built an "infinity" gunge tank that uses a pump to suck up the gunge from below the victim and pump it back over them, so they should have a throughput figure for that.

Won't go into it too in depth but depending on thickness of gunge about 150 litres a minute

Old tank without pump held about 80 litres and that would take about 40 /60 seconds to empty just with gravity, again depending on thickness of gunge

PERFECT! Thank-you