Reading up on how many say spa flex is bad for pools/spas. If you don't go with that, what's the best way to make sure you have centered PVC in a 9' round spa?
Yes ... in the middle of the gunite. It seems that it would be difficult to use 45's without having the pvc zig-zag and come fairly close to the edge of the gunite wall. Is heating/bending required?
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