i recently ended up with what appears to be an older model hot tub, however inside the panel the components are saratoga spa and balboa, i know nothing about hot tubs yet and am eager to get this thing filled up, there was no filter in it when i recieved it and it appears to be missing ahousing where the filter would go, i need help identifying the tub and what size filter i need along with any parts im missing, i have no manual for it and no real information about it, i can post pics if needed, if anyone can help or has time to help it would be greatly appreciated. thanks