That's part of why I suggested puncturing the tank. We're getting spiders regardless, so the main question is how. The witch seems like it's deliberately building up spider pressure in the tank for... reasons, and I can think of few things more unpleasant than high speed man-eating spiders to the face. Cutting down on the pressure it can build up so it can't do whatever it's going to do as well seems like a good idea to me. Of course, this is dependent on what it needs pressure for and how much it needs. If it's building up pressure for a single burst, that would need to be dealt with quick, but if its to do something like spit a stream of spiders or the like, not as immediate a priority. How I see it, anyway.
