100 gpd upgrade to a 200 gpd

[Rascal]

If you put the waste from the first ro to the new one you get less waste....that's series I think as opposed to parallel set up

 

[Smurf]

Sorry rascal and folks as I do go off at a tangent when I'm asked a question

Is this thread about RO or pressure washing??!!
I upgraded from 200 to 300. from 100 to 200 you will produce your pure twice as fast but your waste ratio will stay the same I think. It doesn't matter how long it takes to fill your tank you will always use the same amount of water as long as your pure to waste ratios are the same.