Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_18278508_6 ( total_score_week VARCHAR, date_performed VARCHAR, position VARCHAR )

### Question ###
What was the total score / week of the contestant who placed in the bottom 2 on august 14?

### Accurate SQL ###

SELECT total_score_week FROM table_18278508_6 WHERE date_performed = "August 14" AND position = "Bottom 2"