[Help]Unable to run water through loop

I agree with all of you that the loop should be redone but my friend doesn't want to do it. It's working fine now he says and he's just going to leave it like that. The tubing kinks very easily so that's why the one loop is so long since we don't have angled fittings.

Thanks for all your help.

You're at least the brains in the group who came to ask. My guess is your friend bought everything thinking he knew it all. Takes a lot to step up and you did sir. I respect you for that but refuse to give help to a naive person, your friend who brushes off our experiences. Good luck.

To bad your friend doesn't listen, that could be a good looking loop with a few fitting and re-route.

just using a different orientation for the pump would make a lot of difference already