No he understood ok as I was clear in the email I sent him how it was intended to be used.
Also it's an external heater pump not a sumbmersable heater pump you silly billy
So could you rig it to sit on a van tank, again on timer, same principle, overnight? If its self priming, on a loop back into tank. Guessing then, same as the hottub? (Apart from the pump is elevated)
Lol, i dont want struggle of fitting element heater. This sounds easier, lol really want to make this work