I know there’s been lots of people trying to find adapters and different tubing to replace that horrible green return line that comes with the tank, so I thought I’d share this. I found this on the US Plastics website and I was able to run 3/4 black tubing from my Vectra with the 3/4 barb to 5/8 black tubing going into the tank. I put it on with hot tap water and everything feels very snug and secure after cooling down.
https://www.usplastic.com/catalog/i...MIr9aGhdKT3AIVhYWzCh2Trg7HEAQYASABEgK5WfD_BwE
https://www.usplastic.com/catalog/i...MIr9aGhdKT3AIVhYWzCh2Trg7HEAQYASABEgK5WfD_BwE