Product review (5 stars): Get the maximum output from your humidifier w/ this water tray!
I had the same experience as the previous reviewer...I accidently cleaned the small sand granules years ago thinking they were mineral deposits.  Now when I replace my media pad, its clear that I'm not getting even water coverage over the pad because I'm not getting the proper flow, nor am I getting the maximum benefit from the humidifier.  This year, my humidity in the house was very low so I decided to replace the tray.

I was pleased to see that this tray has a screen/mesh and small tabs that guide water to each of the holes - no sand/granules.  I installed it last night and my humidity in the house is already up 8% in 24 hours - I expect it will be better in a couple of days.

This tray works great and was a perfect fit for my existing setup - no need to replace the entire assembly.