Plumbing is already hard, but why do I have so many weird sizes of things that need reducers? My return pump has a 1" or a 3/4" hose adapter for the output. But my Red Sea Reefer 170 has a 5/8" vinyl tube and hose barb for the return. I can't find anything, for the life of me, that does any reducing to 5/8". so frustrating.