OK so I need a little advice on plumbing my tank. I'm looking for some simple solutions. I purchased some hose barbs and 1" vinyl tubing for my return. I'm ok with that. I was thinking of using the same 1" tubing for my overflow. I have a glass-box overflow with a 1 1/2" bulkhead. I purchased an adapter and hose barb to use the 1" vinyl tubing with the overflow as well. I'm just a little nervous that I won't get enough water flowing through the vinyl tubing on the return. Am I over reacting? I really don't want to use PVC because I'm looking for something easy to change. I just want to make sure my flow will make the 1" tubing I'm using on my Oceanrunner 3500. Any other easy options I could try?