Hi! I have a 100gpd ro/di unit, however I dont have it hooked up to a reservoir. I would like to connect it to something around 40 gallons. I would like to make a DIY project out of it to save money. Has anyone done this? If so what did you hook it to and how do you install the float valve. If someone can post pics of there project or point me in the right direction I would appreciate it. Thanks.