Long story short, prior thread, waterfall pump never started up this year, just got around to checking it out. Humming noise when switch turned on. Changed out capacitor, still didnt work. Tried getting back cover off to check if spindle seized, and noticed that the back cover is rusted out and has a hole in it. Assuming pump is shot and I need a new one. I don't mind doing it myself, but the YouTube videos I watched on it looked complex in terms of knowing which parts to get