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babgaly | Staff 75.7K Views
Jan 7, 2026 12:42 AM

SimPure Reverse Osmosis Under Sink Water Filter System (Alkaline or Near 0 TDS)

$100

$199

49% off
+ Free Shippingat Amazon
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SimPure Direct via Amazon has SimPure Reverse Osmosis Under Sink Water Filter System on sale listed below for $167.20 - 40% off when you visit the promo code page to activate (or apply promo code T1NEWYEAR at checkout) = $100.32. Shipping is free.

Thanks to Deal Hunter babgaly for sharing this deal.

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Editor's Notes

Written by citan359 | Staff

Original Post

Written by babgaly | Staff
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
SimPure Direct via Amazon has SimPure Reverse Osmosis Under Sink Water Filter System on sale listed below for $167.20 - 40% off when you visit the promo code page to activate (or apply promo code T1NEWYEAR at checkout) = $100.32. Shipping is free.

Thanks to Deal Hunter babgaly for sharing this deal.

Available:

Editor's Notes

Written by citan359 | Staff

Original Post

Written by babgaly | Staff

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Top Comments

fieldcar
676Comments
364Reputation
Reverse osmosis (RO) systems remove nearly all dissolved minerals from water, including beneficial ones like calcium and magnesium. This results in water that is very pure but often tastes flat or bland due to the lack of minerals. Additionally, the absence of minerals can make the water slightly acidic, with a pH typically between 5.0 and 6.5.
To improve taste and balance pH, an alkaline filter is added as a final stage in some RO systems. This filter reintroduces essential minerals such as calcium, magnesium, and potassium into the water. Doing so raises the pH to a more neutral or slightly alkaline level (typically 7.0–8.5), enhances flavor, and gives the water a smoother mouthfeel.
In short, the alkaline filter prevents flat water by restoring minerals removed during RO filtration, making the water more pleasant to drink and less acidic.
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pwnking
126Comments
54Reputation
Reverse osmosis tips. Only use dow filmtec membranes. Everything else is worse and not worth savinga few bucks. Amazon sells the film tecs for 30.00. Ispring is a decent starter brand for kits. Tank and the autoshut off valve are the weakest link. Might switch them out ASAP. Bulk Reef Supply is your best friend for RO. They dont sell garbage. Pumps are silly IMO. I get 98-99% rejection without it. If you do get a pump, this one is crap. Get a flowtec or shurflo. The pressure tank, is most likely the first thing that breaks though, and it's very hard to get an American tank. USA Water Systems used to sell American tanks, but now it seems you have to buy the whole 500.00 us system to get the us tank. Pretty solid warranty though.
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NaPra
2.1KComments
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Just wanted to mention that alkaline water "benefits" are bunch of nonsense: https://www.mayoclinic.org/health...q-20058029
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182 Comments

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Jan 7, 2026 4:08 AM
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NaPra
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Jan 7, 2026 4:08 AM
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Just wanted to mention that alkaline water "benefits" are bunch of nonsense: https://www.mayoclinic.org/health...q-20058029
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Jan 7, 2026 4:20 AM
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Joined Oct 2010

This comment has been rated as unhelpful by Slickdeals users.

Jan 7, 2026 4:24 AM
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Joined Nov 2015
pn88Jan 7, 2026 4:24 AM
930 Comments

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Deal is for tank options. Tankless is better, specially if placing under sink
5
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Jan 7, 2026 4:54 AM
302 Comments
Joined Dec 2007
masterbwJan 7, 2026 4:54 AM
302 Comments
Quote from NaPra View quoted comment :
Just wanted to mention that alkaline water "benefits" are bunch of nonsense: https://www.mayoclinic.org/health...q-20058029
Correct, that's a falsied info that many people believed.
3
Jan 7, 2026 8:21 AM
122 Comments
Joined May 2020
Artc8888Jan 7, 2026 8:21 AM
122 Comments

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PLEASE Note the replacement filter will cost you $63 (set) + RO filter ($52)..... also, i prefer to have a clear canister, where I can visually monitor the degradation of the filter....
7
Jan 7, 2026 12:03 PM
784 Comments
Joined Jan 2017
JasonDBJan 7, 2026 12:03 PM
784 Comments
Quote from Artc8888 View quoted comment :
PLEASE Note the replacement filter will cost you $63 (set) + RO filter ($52)..... also, i prefer to have a clear canister, where I can visually monitor the degradation of the filter....
That's with almost any filtering system. The filters are the most expensive part because that's basically all it is and the rest of it is just a skeleton that holds the filters. This should be no surprise.
3
Jan 7, 2026 1:02 PM
36 Comments
Joined Aug 2008
ionzJan 7, 2026 1:02 PM
36 Comments
I was thinking of getting a RO system for a saltwater tank. The initial cost looks good but I think reviews complained about the motor failing and filter pricing. Anyone have a recommendation of what they use?

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Jan 7, 2026 1:40 PM
14.8K Comments
Joined Jul 2006
ben_r_Jan 7, 2026 1:40 PM
14.8K Comments

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Quote from Artc8888 View quoted comment :
PLEASE Note the replacement filter will cost you $63 (set) + RO filter ($52)..... also, i prefer to have a clear canister, where I can visually monitor the degradation of the filter....
Which RO system has clear canister filters?
4
Jan 7, 2026 1:41 PM
180 Comments
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Jan 7, 2026 1:51 PM
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Blade2000Jan 7, 2026 1:51 PM
6.4K Comments
Quote from NaPra View quoted comment :
Just wanted to mention that alkaline water "benefits" are bunch of nonsense: https://www.mayoclinic.org/health...q-20058029 [mayoclinic.org]
I think anyone with common sense knows this.
1
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Jan 7, 2026 1:55 PM
126 Comments
Joined Jul 2012
pwnkingJan 7, 2026 1:55 PM
126 Comments

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Reverse osmosis tips. Only use dow filmtec membranes. Everything else is worse and not worth savinga few bucks. Amazon sells the film tecs for 30.00. Ispring is a decent starter brand for kits. Tank and the autoshut off valve are the weakest link. Might switch them out ASAP. Bulk Reef Supply is your best friend for RO. They dont sell garbage. Pumps are silly IMO. I get 98-99% rejection without it. If you do get a pump, this one is crap. Get a flowtec or shurflo. The pressure tank, is most likely the first thing that breaks though, and it's very hard to get an American tank. USA Water Systems used to sell American tanks, but now it seems you have to buy the whole 500.00 us system to get the us tank. Pretty solid warranty though.
14
1
Jan 7, 2026 2:25 PM
15 Comments
Joined Oct 2020
bayon88Jan 7, 2026 2:25 PM
15 Comments
Quote from FantasticArm1685 View quoted comment :
I got rid of my RO and put in a simple filter.
Any reason why?
Jan 7, 2026 2:48 PM
800 Comments
Joined Jun 2012
OPTICSOURCEJan 7, 2026 2:48 PM
800 Comments
Quote from NaPra View quoted comment :
Just wanted to mention that alkaline water "benefits" are bunch of nonsense: https://www.mayoclinic.org/health...q-20058029
It's worse than nonsense. If you don't supplement the alkaline water with electrolytes regularly, you will have a host of unwelcome side effects.
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Jan 7, 2026 2:51 PM
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NaPra
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Jan 7, 2026 2:51 PM
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Quote from lionnoize View quoted comment :
Yea cuz calcium, magnesium, and potassium don't do anything right? You should teach us some more
I'm afraid that I wouldn't be strong enough to pull you out from the deep pit you live in.
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Jan 7, 2026 3:29 PM
676 Comments
Joined Nov 2017
fieldcarJan 7, 2026 3:29 PM
676 Comments

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Quote from NaPra View quoted comment :
Just wanted to mention that alkaline water "benefits" are bunch of nonsense: https://www.mayoclinic.org/health...q-20058029
Reverse osmosis (RO) systems remove nearly all dissolved minerals from water, including beneficial ones like calcium and magnesium. This results in water that is very pure but often tastes flat or bland due to the lack of minerals. Additionally, the absence of minerals can make the water slightly acidic, with a pH typically between 5.0 and 6.5.
To improve taste and balance pH, an alkaline filter is added as a final stage in some RO systems. This filter reintroduces essential minerals such as calcium, magnesium, and potassium into the water. Doing so raises the pH to a more neutral or slightly alkaline level (typically 7.0–8.5), enhances flavor, and gives the water a smoother mouthfeel.
In short, the alkaline filter prevents flat water by restoring minerals removed during RO filtration, making the water more pleasant to drink and less acidic.
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