Why did my resurrection plant turned ashen? I know to change the water every 2 days, and permit it...

I know to change the water every 2 days, and permit it dry up sometimes. What am I doing wrong?
Protecting a lemon tree?
Answers:    If your water is chlorinated, the chlorine might be the culprit. Before you water it subsequent time either use tepid marine or let cold water sit contained by your watering dispenser until it reaches room temperature.

I've also read that the hose should be changed daily and, it derives nutrients from, of all things, dust.

Hope this is somewhat of assistance.