I am in search of like an in-line pump to pump water out of a water tank. We have a 500 gallon poly water tank that we use to water trees, shrubs, flowers, etc. in landscape beds for a subdivision and different things. Does anyone know of either a gas powered or electric motor that can be hooked up to the tank to perform this job? I currently stick a sump pump down in the top of the tank, and pump from there. This works, I would just like something a little more setup for the job.