As long as you have water movement and a heater you will be ok in the short run. The water isnt going to get that dirty in one day.
the other duplicate posts have been removed. Please try to post your question in one forum. Posting it in multiple forums wont usually get a resonse any faster and will cause confusion in the end when there are multiple posts in each individual topic and people start wondering where their reply is because they dont realize there are multiple topics.