Hi all for those like me that has a problem with external skimmers that when your power goes out the skimmer fills up to high and over spills your skimmer when power resumes, we should have a time delay switch ,what it does is that when power resumes our water level is already to high in the skimmer, so your external pump fills your skimmer to fast to control but buy having a time delay it delays the power of your feed pump and skimmer for anything from 5mins to 60 mins, a nice toy to have and save you floors from getting wet and wife from going aip **** on us ,and also saves you from lifting your skimmer above your sump level,i thought i will share this with you guys.