I’m also going to look into the pall filter. In the meantime, I have increased my hot water setting to 140. From what I’ve read , keeping the range between 130 and above kills MAC. I removed my shower head in the meantime. I run the hot water for a couple of minutes first, The lukewarm shower seems to create less steam. I also leave shower curtain partially open to also to create less steam. Has anyone else read about increasing water heater settings above 130 to eliminate MAC in the shower?