The thing that ' s seriously wrong is the brexit . <| sep |> Yes you can , as long as the tubes and fittings are matched together you ' ll be fine , However , pressure will increase in all parts of the loop between the highest restriction and the pump , leaving you ever so slightly more susceptible to leaks I wouldn ' t expect it to be of any true consequence though <| sep |> I believe that the goal of this perma Autofill activated actually is to deal with the problem of second role support . I tried to explain my point here , and it might very well end up being a more than decent solution people end up queuing more with secondary support because this system allows to still have a chance to get your main role then there will be more people queuing as supp and hence less people getting autofilled , it ' s kind of an autosolving system that might very well end up being good for everyone .