Wanted to drop a line about the BRS 150gpd RO upgrade. Being on a well, my water pressure hovers around 45psi... Even though I have a 75gpd membrane, I was only making about 40gpd. RO membranes work best at pressures about 50psi.. due to a new (larger) saltwater tank, I decided I wanted to double my RO output .. I ordered their upgrade along w/ a pressure pump. All installed last nite and I'm making a lot more water now. output of RO is 1tds (prior to pressure pump, I was running between 2 & 3 tds). Currently I'm considering this a Win. If anything changes in near future, I will update my post.