Which RO unit should I get

[Madmax275]

I am trying to figure out which RO system I need. Should get a 50 GPD OR should I go higher

 

[Dtackett]

go higher lol 50gpd sucks no matter how small your tank is.... get this one

http://spectrapure.com/RO-RODI/RODI-SYSTEMS/MaxPureMPDI-180-GPD-RODI-System-OPEN-BOX

 

[Madmax275]

I tho it would not work right if u do not have good water pressure at home

 

[Dtackett]

without proper pressure you wont run as many gallons. if you have low pressure like I do, you will want to purchase a booster pump. you can get the 8800 booster pump for about 90 bucks online. but as is with low pressure if you run a 50gpd unit you may make as little as 1 gallon per day while it dumps the rest of the water out. I hover around 25 psi on well water and it would take about 20 hours to make 5 gallons of water.

 

[alxjrz]

that's a great price for a Spectrapure! if your water pressure is low you could just remove one of the membranes and save it in your refrigerator for up to a year as long as the membrane does not dry out. Spectrapure usually test's the membranes before shipment and are sealed. but given that this is an open item I would not know. mine came in sealed but wet in a plastic bag. save your pennies for the booster and you will love the output of a 180! cheers

 

[markalan]

I run a Spectrapure at 40psi and make about 5g in 3 hours. Also make sure you don't have chloramines in your tap water if so Spectrapure has a unit for that.

 

[reefwiser]

I like to get 150 gph units. don't like waiting for water all day if I really need a bunch in a hurry.

 

[AZDesertRat]

40 psi is about the bare minimum a RO membrane will function efficiently at. The dual membrane systems are great if you needa lot of water in a hurry but you need a minimum of 65 psi to operate them. The Aquatec 8800 pump will barely keep up with dual membranes, the flow is really above the pump curve so you may eventually have issues if you boost it too high. They are designed for up to and including maybe 100-125 GPD.
I run an 8800 on a single Spectrapure 90 GPD RO membrane set at 95-100 psi and get around 135 GPD with the one membrane at 99.4% rejection rate so dual membranes aren't needed. I used to have the dual membrane MaxCap before this one which is the UHE-100.

Chloramines are not an issue with any Spectrapure RO/DI system as long as you use a high quality low micron sediment and carbon block filter. Its not the carbon that matters as much as the DI resin.