Brine Shrimp In Styrofoam Cooler?

I have been thinking about getting brine shrimp because I have heard that bettas love them. Will a styrofoam cooler with a makeshift V-bottom be alright for keeping them as long as I add a foam filter? Also, what amount of salt per cup of water should I use?

 

Adult Brine shrimp have almost zero nutritional value, they only thing they are good for is digestive fiber, bettas love fish eggs, try them instead

 

Also,

Adult Brine shrimp have almost zero nutritional value, they only thing they are good for is digestive fiber, bettas love fish eggs, try them instead

What kind of fish eggs?

 

Any really as long as it’s cheap

 

Any really as long as it’s cheap

Ok ty