I understand how the crystals can be subjected to sounds, but how are they targeted with “intentions”.
BTW, I pray over my food in order to thank God for the sustenance and to ask Him to bless my use of it. I also ask His blessing before performing some tasks, and I ask for His blessing and protection in my travels.
It seems that crystalline structures in general can hold intent. I did some work with crystals back in college and some of our findings suggested that the overall attitude of the team could effect the outcomes (hello quantum interaction). But water is something special (duh!). Water for intents and purposes appears to be conscious. Many experiments have supported this theory (see above crystalline structures). When you give thanks to God, you are also putting the intent of graciousness into the water. The water likes it and will perform the job that God intended better. I have personally done some experiments with holy (blessed) water vs tap on plants. The plants that received the holy water grew much better.