I just installed an x-stream slide this past weekend. I have an IG pool.
I put a three way valve in the return line just after the filter to feed the slide. I used a valve, which is more expensive than a T fitting, so I could adjust the flow to the slide. From the valve I ran 1" flexible PVC over to the slide. This worked for me although I still have to figure out a good way to disguise the ugly white hose. I also put an ON/OFF ball valve at the slide high enough so only adults can turn it on and off.

Hope this helps


Dan