Yeah, I know, I'm just a sucker for diy stuff.
Well, The bottom of the jug, which is thick and reinforced with hard plastic bands going crossways, suddenly flipped itself inside out, and loudly. After my heart attack ended (the tank and jug are right next to my computer), I pulled the diffuser and bled out the pressure (into the tank. Why waste delicious Co2?). I'm talking SOLID co2 air jet for about 3 minutes. Now I'm back to the ol' airstone under the filter intake. I think I let the diffuser dry out and all the pores are mucked up and basicly fused into one solid rock. I'll soak it for about a week and give it another go. Better luck next time.