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If you don't have chloramines in your water, 4 stages will likely be fine.I live in a city so I think the 4 stage is ok but any reason I should get a 5 stage?
There are common cases where this is not correct.5 stage on city water so you can run carbon. On well water 4 is usually enough
Higher gpd membranes are not less efficient if you're talking about the amount of feedwater that becomes RO or DI water. In the absence of water quality information re your feedwater, you'll want to run any residential RO membrane at about 20% recovery (the proverbial 4:1 ratio you've probably heard of).I'm reading that the more GPD means less efficiency. Does that mean a 75 gpd is preferable over something like 100 gpd?
There's some confusion here regarding the difference between a DI BYPASS and a FLUSH VALVE. Using a flush valve to address TDS creep isn't the way to go. A DI Bypass valve does that very efficiently.Another important factor in the system is accessories. Having a...manual flush for flushing down "TDS"Creep.
Sweet mother of pearl! I think it's time. I'd sanitize it before you put new filters in.Thanks for chiming in Russ!
Your excellent customer service is exactly why y'all are my go-to for all my ro/di needs. (And it looks like I'll be ordering a complete set of filters for my 4 stage soon. I looked at the piece of tape I use to mark the change out date the other day - would you believe March 2016? )
There's some confusion here regarding the difference between a DI BYPASS and a FLUSH VALVE. Using a flush valve to address TDS creep isn't the way to go. A DI Bypass valve does that very efficiently.
A FLUSH VALVE is installed as a bypass around the flow restrictor on the concentrate ("waste water") line. http://www.buckeyehydro.com/membrane-flush-kit/
A DI BYPASS VALVE temporarily routes the permeate ("RO water") to a drain rather than to the DI as a way to address TDS creep. http://www.buckeyehydro.com/tds-creep-bypass/
Russ