you can get the 4M ADP commercial crystal growing kit in following link
https://amzn.to/2KOoLzb

Or you can get the ADP powder in here:
https://amzn.to/2NjEk3R

Ammonium dihydrogen phosphate (ADP) is the most common ingredient in commercial crystal growing kit

You can check the following video for making the ADP crystal seeds
DIY Crystal at Home (4) - ADP
   • How to Grow Crystal at Home (4) - ADP  

Other videos:
DIY Crystal at Home (1) Alum
   • DIY Crystal at Home (1) - Alum  

DIY Crystal at Home (2) -copper(II) sulfate
   • DIY Crystal at Home (2) - Copper(II) ...  

DIY Crystal at Home (3) - potassium ferricyanide
   • How to Grow Crystal at Home (3) - pot...  

DIY Crystal at Home (4) - ADP
   • How to Grow Crystal at Home (4) - ADP  

DIY Crystal at Home (5) - Borax
   • How to Grow Crystal at Home (5) - Borax  

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