I’m wanting to purchase a backup pump but not sure how to go about it. I currently have a Cor-15 which has been fine. I do get annoyed with the Neptune equipment and wouldn’t mind getting my return pump away from the apex controller. I’m looking at the Royal Exclusiv eco 5 25 watt pump and using it as the main pump and the Cor-15 as a backup. My concern is having to redo my plumbing as the fitting are quite a bit different and then the difficulty in putting the Cor back in if needed as a backup. My Cor-15 has a 1” reducer off the 1.25” union currently. Is there an easy way to do this with unions. Or do I just buy a 2nd Cor pump and switch them out if needed.