Response to I have a 500 gal attached to pool, gunnite spa with a slow main drain leak. My idea is to re add water to the spa, heat to 70 degrees and turn the pump on low recirculate just to the spa before targeting the main drains with the Fix a leak. How long do I keep it running? How long should it be off? When do I turn it back on and when can I up the pressure back to normal? Should I maintain the temp the same during the whole process? Thanks.

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