Sorry, I mean if I use non-rigid tubing in the push to connect fitting on my sumps built in dosing line holder.My ATO and AWC pumps are in the garage and I use 1/4 RODI tubing run up through the attic between the tank and the garage when the pump are located, The tank is 35ft from the garage where the pump are at. I have not had any issues with the 1/4" tubing or fittings. I also use it between the X10 and the sump for my All For Reef dosing and also the alkalinity testing. So far no issues. Once the lines are run though they usually do not get touched unless I have an issue with a pump. Then only at the pump.
this tubing in a push-to-connect john guest type fitting
https://www.saltwateraquarium.com/1...UGm_Ppi0cSMQuQo6oj8iSfvVtpnm2e8IaAhAVEALw_wcB