Water filter upgrade - Can I add on an RO membrane?

HomeBrewTalk.com - Beer, Wine, Mead, & Cider Brewing Discussion Community.

Help Support Homebrew Talk:

Sidman

Well-Known Member
Joined
Nov 8, 2014
Messages
137
Reaction score
19
Location
Houston Tx
Could use some recommendations on upgrading my filter. I currently have a 3 stage filter - pic attached - that has a 5 micron sediment, 5 micron granular carbon and 5 micron carbon block filter. I sent in a water test and found I still have high sodium levels so I was thinking about adding on an RO membrane and coconut carbon filter. I need a total of around 16 gallons on brewday so I would like to be able to fill that amount in preferably less than an hour.
Is adding that on as simple as adding a housing, membrane and inline filer or would I need additional items? i have seen some set ups with pumps and permeate filters etc.
Second is the three stage filter is all 3/4" where most of the RO stuff seems to 1/4" or 1/8". Would a simple adapter from 3/4 to 1/4 work to bridge the two sets of filers?

Also as a side note I noticed at HD they had two different water test kits. One was like $10 and the other somewhere around $20 - definitely cheaper than the $40 from Wards. Anyone used either of those?

View attachment water filter.pdf

View attachment ro membrane housing.pdf

View attachment ro membrance.pdf

IMG_2708.jpg
 
Joined
Dec 17, 2013
Messages
602
Reaction score
204
We're here!

So as you found, a sediment filter and carbon filter (gac or block) will not remove sodium.

In general, sediment filters remove UNdissolved "chunks" of anything (typically sand/silt/etc).
In general, carbon removes organic chemicals, VOCs, pesticides, herbicides, and chlorine and its by-products.

If you want to remove sodium, than yes, RO is the way to go.

Is adding that on as simple as adding a housing, membrane and inline filer or would I need additional items? i have seen some set ups with pumps and permeate filters etc.
I'd get rid of the GAC cartridge - carbon blocks are far superior.
RO membrane, membrane housing, flow restrictor, fittings, tubing... would be about it. And you might want a bracket to pull all your stuff together into a "system."

As far as going for x-inch to y-inch fittings? yes... its all doable.

Most people don't need a booster pump or permeate pump.

Russ
 
OP
Sidman

Sidman

Well-Known Member
Joined
Nov 8, 2014
Messages
137
Reaction score
19
Location
Houston Tx
We're here!

So as you found, a sediment filter and carbon filter (gac or block) will not remove sodium.

In general, sediment filters remove UNdissolved "chunks" of anything (typically sand/silt/etc).
In general, carbon removes organic chemicals, VOCs, pesticides, herbicides, and chlorine and its by-products.

If you want to remove sodium, than yes, RO is the way to go.



I'd get rid of the GAC cartridge - carbon blocks are far superior.
RO membrane, membrane housing, flow restrictor, fittings, tubing... would be about it. And you might want a bracket to pull all your stuff together into a "system."

As far as going for x-inch to y-inch fittings? yes... its all doable.

Most people don't need a booster pump or permeate pump.

Russ
Thanks so much for the help! As far as the carbon block filter would you recommend the same 5 micron or different size? Same question I guess with the sediment - is 1 micron more preferable?
Lastly I am likely to only use this for brewing water. Should I store the filters dry between uses or keep water in them?

Thanks again!
 
Joined
Dec 17, 2013
Messages
602
Reaction score
204
Assuming this is municipal water without chloramines, I'd opt for our 1 micron sediment filter, 0.5 micron carbon block.

Store the filters in the system, and you should use any RO system at least once a week.

Russ
 
Top