Originally Posted by amberoze
I mentioned replacing the ribbed hose with smooth vinyl hose for multiple reasons actually. Increase in flow rate (the ribbed hose acts almost like a series of speed bumps), less gunk buildup in the hose (the ribs catch trash on the intake side and can slow or even stop flow given enough buildup), and vinyl is more durable (the stock hose can dry rot because that's what plastic does over time).
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Where'd you buy the vinyl tubing?