chlorella vulgaris

• can bind heavy metals in the body
• you can buy it here
• unfortunately chlorella is very difficult to crack (and therefore the nutrients and detox are hard to get)

spirulina

• easier to absorb
• can also do detox
• you could do a two-chamber system wherein the first chamber detoxes the water and the second chamber is for food

setup

• a tank with a bubbler, etc.
• Feed the algae tea of vermicompost that has been microwaved for two minutes and then cooled to room temperature
• add 5 tablespoons of baking soda per gallon
• you'll need to first create a starter culture and then scale that up