I recently developed a leak in my Jacuzzi J335 hot tub. I purchased a bottle of stop leak. The directions say to disable the heater, add the product and allow to run for a minimum of eight hours continusly. I dropped the temprature to 65 degrees on the control panel. My question is, how do I override the computers twenty minute safety feature to allow it to run the proper amount of time without sitting beside it to hit the button every twenty minutes. Help!