skippy fountain knockoff thoughts

[colonelkirby]

I have constructed a fountain using the yippeeskippy method of re-purposing the Polaris 380 port. Slightly different however in water delivery. I used some spare 1/2" sprinkler parts. Do I need to be concerned about back-pressure having knecked the outlet down to 1/2"? My Polaris is still running on a daily basis. It's wired using the flexible Polaris pipe at the booster pump if that matters. Thanks!

 

[ajw22]

The grey circle on the side of the wall fitting is a pressure release valve.