Big help everyone! I have time to go by the supplies place later this week, so hopefully I'll get some answers. Thanks!

The sleep therapist said to wash/rinse daily... so i am. And yes it's cracked- stepping in a pool of water first thing in the morning is not my normal routine. And the resivoir was bone dry. So there's that...

After reading through several posts I didn't see what I've experienced. This is my 2nd resivoir and both have cracked along the bottom and into the seals. I only use distilled water, i don't put anything into the resivoir, and i daily wash/rinse it. I'm wondering if it has to do with ambient air tem...