I use KAF-Flex brand flexable pvc hose with stainless hose clamps for everything besides from skimmer to pump. Did not really trust slovent welding with this pipe but reading on this forum it seems that others consider it dependable.
Do have a couple of other questions.
18 ft round AG pool with a 1 HP hayward inground pump. Had to go with an inground pump to get the suction I was used to with a Jacauzzi 1 hp AG pump. Tried a 1 HP AG hayward but could feel it was about 1/3 in suction power by hand and especially when I vac.

1. This new pump makes a little vibrabtion noise since it is bolted to the plastic support base on my Jacuzzi sand filter. And dose not hold real good in the plastic so bolts come loose and get some vibration noise. Do I even have to have the pump mounted or bolted down? I use the flex to sand filter so dont have to worry about small vibration will loosen pipe.

2. I have to use the cheap gray pipe that you buy in sections to go to the Lomart brand skimmer. If I try the PVC hose it will not clamp tight enough on a Lomart brand skimmer. Its listed for 1 1/2" pipe but easy to see it is actually a little smaller barb on the skimmer so thats the problem. I have even tried to use 2 hose clamps and even my heat gun to heat pipe a little just before clamping. But always got a little leak so had to switch this pipe back.
Thanks for Any suggestions or comments