I rent a house in Laredo, Texas with an in-ground pool of approximately 10,000 gal capacity with a sand filter. The pump stopped working yesterday. The landlord is looking for a new pump to replace the non-operating one. What can I do to maintain the pool until the pump is replaced? Or am I just up the creek? Oh, I use the "standard" 3 inch pucks and powdered shock to maintain chlorine levels.