RODI System - Osmosis Replacement Membrane GPD Rating

[hillegom]

The membranes are all the same size, they will fit into your housing.
But, you have to change your flow restricter, to match your new membrane, ie if you go to 150 gpd, you have to have a 150 gpd flow restricter. You should change out the FR anyway, when you chg the membrane.
The 100 gpd membrane is about 90% efficient whereas the 75 gpd membrane
would be about 98% efficient. If you are using DI as well, with the 75 gpd, the DI would last quite a bit longer.
I imagine, a 150 gpd membrane would be less efficient again.