Thanks for the heads up. I'll look into other tubing for next grow.
I found that the 3/8 is MUCH cheaper than the 1/2 inch on amazon and really thick walled so you can ream it out with a rotary tool (dremel) to 1/2 with no consequences really. My stuff isn't high pressure and I could only find pumps with half inch outlets even though amazon said they were 3/8". Hose:
Amazon product ASIN B0033CJKLM