Yeah... Tenecor service has been atrocious. I still haven't gotten a call/email about my leaking tank. In that pic of the tubing there appear to be multiple sizes of tubing - which is exactly how they sent me my tubing. The zip ties are useless. Use cable ties anywhere you use the flex tube. When I move my tank, I'm going to switch to hard lines. The Reeflo pumps work very well, and I can't say enough about THEIR service - they sent me two new pumps, free of charge, sight unseen when the first two burned out because of the leaky tank.
Good luck!