Montmorillonite powder has been a go to for all fish and shrimp keepers/breeders for a long time and for good reason montmorillonite powder has been proven to improve many things in fish and shrimp including.
 
Improved color
Healthier skin, scales and skeletal system
Improved immunity, including disease & parasite resistance
Increased egg production and better reproductive health
Less deformities and mineral deficency relates issues
Increased fry survival rate
Enhanced and faster growth rates (when paired with a good food)
Stronger and larger fins with improved resistance to splitting or damage
Increased lifespan
 
all or these bennifets are seen in fish and shrimp after regular use
Here at Canada Guppies we use one spoon full (included spoon) per 10 GALLONS