I bought all the bits I needed to set up my RO, but I spent hours trying to figure it out (not the sharpest tool in the box). I've got a 450gpd, a pump, an in-line TDS meter and a pressure gauge. I've got a red hose, I've got blue hose, I've got white hose. I haven't got a clue. Not sure where to start, is the hozelock connection on it an "Out" or "In"? I do have an adapter for the smaller 1/4 hose as well, so not sure. If some kind soul could explain it to me in the simplest of terms, what needs to go where lol.