[xtm]

Originally posted by RonD
IE if I could find something like this for better flow
http://www.vacdepot.com/product-info...cvsi/17409.jpg

versus something like a typical 90 like this

http://outdoorelementspa.com/tn_90-Degree-Elbow-S40.jpg

how much gain would I get from the top one over the typical 90

The difference is negligible. Trust me, I'm a PVC salesman