Let me see if I can help
Culture container - anything that is long, wide, at least 2 inches high. Cake pans are a perfect example. If you get deeper than 2-3 inches you have to add an airstone.
Temperature - room temp. Anything from 60-85 is optimal.
Salinity - 30 ppt to 40 ppt. They are used to the tide pools evaporating during the day and the salinity going up.
Circulation - not needed, especially in a shallow system.
Lighting - ambient
Food - Phyto-Feast or Shellfish Diet, they like variety. Nanno is the least effective species for them.
When you have a good population going simply scoop some out and feed them to your tank. Then replace the water in the "tidepool". If you are replacing it with water from your aquarium I'd pour it through a coffee filter first to keep other organisms out.