Anyone using a ups power supply for the dwc/rwdc setups as a backup in case the mains goes off.? Is it needed? How long will a plant last before it is killed or damaged from heat or lack of DO? I keep thinking if i hook my water pump up to a ups the if the power goes then i will still be circulating nutes and flooming for oxygenation of the water. I know my lights will be off but this should be enough IMO to stop any damage to roots or plants.? Im away from my girls for upto 8 hours so a bit of a safety net would be nice. love to hear people experiences with power outs and how they protect their girls from such extremes?