when i had a recent booster pump i attatched it just after my main water source coming from main tap, then going into RO via a 1/2 inch hosepipe. looking on youtube they all have them installed going into membrane from the last vessel all using 1/4 in. RO tubing. is there a right way to this . this is my normal set-up now. water from DI vessel going outside into water butt.