Reverse Osmosis & Deionization

Find good bargains and great deals on reverse osmosis & deionization.
Subcategories:
Auctions Buy It Now All
Enter Zip or Post Code for shipping:
1,045 itemsPriceShippingTotalTime Left
25  Clear inline empty refillable cartridge  2"x 10" For Resin/carbon/calcite Buy Now »

25 Clear inline empty refillable cartridge 2"x 10" For Resin/carbon/calcite

Buy: $125.00 Ships:
Free
$125.00
Buy now
14 mins
Reverse Osmosis RO/DI WATER AQUARIUM REEF FILTER 6 STAGE  75 GPD CHLORAMINE Buy Now »

Reverse Osmosis RO/DI WATER AQUARIUM REEF FILTER 6 STAGE 75 GPD CHLORAMINE

Buy: $149.00 Ships:
Free
$149.00
Buy now
3 hrs
7 mins
NEW Aqua FX 100GPD Barracuda Glacial RO/DI FREE SHIPPING Buy Now »
Free Shipping

NEW Aqua FX 100GPD Barracuda Glacial RO/DI FREE SHIPPING

Buy: $244.99 Ships:
Free
$244.99
Buy now
3 hrs
18 mins
Standard 2.5x10" 2 Carbon Block 2 Sediment Water Filters 2 lbs Color Changing DI Buy Now »

Standard 2.5x10" 2 Carbon Block 2 Sediment Water Filters 2 lbs Color Changing DI

Buy: $38.93 Ships:
$10.00
$48.93
Buy now
3 hrs
22 mins
3 RO/DI AQUARIUM REVERSE OSMOSIS WATER FILTERS Buy Now »

3 RO/DI AQUARIUM REVERSE OSMOSIS WATER FILTERS

Buy: $28.88 Ships:
Free
$28.88
Buy now
3 hrs
30 mins
Aquarium Reef Reverse Osmosis water filter  6 stage RO/DI SYSTEM 75 GPD USA Buy Now »

Aquarium Reef Reverse Osmosis water filter 6 stage RO/DI SYSTEM 75 GPD USA

Buy: $119.00 Ships:
Free
$119.00
Buy now
4 hrs
16 mins
RO/DI DUAL DI RESIN REVERSE OSMOSIS AQUARIUM ADD ON Buy Now »
Free Shipping

RO/DI DUAL DI RESIN REVERSE OSMOSIS AQUARIUM ADD ON

Buy: $69.00 Ships:
Free
$69.00
Buy now
4 hrs
21 mins
AQUARIUM REEF REVERSE OSMOSIS DI WATER SYSTEM 150 GPD MADE IN USA Buy Now »

AQUARIUM REEF REVERSE OSMOSIS DI WATER SYSTEM 150 GPD MADE IN USA

Buy: $99.99 Ships:
$20.00
$119.99
Buy now
6 hrs
20 mins
6 STAGE REVERSE OSMOSIS WATER FILTER WITH PERMEATE PUMP Buy Now »

6 STAGE REVERSE OSMOSIS WATER FILTER WITH PERMEATE PUMP

Buy: $178.00 Ships:
Free
$178.00
Buy now
6 hrs
59 mins
Reverse Osmosis Water System 4000 GPD Commercial, Industrial Bid Now »

Reverse Osmosis Water System 4000 GPD Commercial, Industrial

Bid: $2,790.00
Ships:
Freight
$2,790.00
Plus Shipping
10 hrs
4 mins
Reverse osmosis water system Commercial Industrial 6000 GPD Bid Now »

Reverse osmosis water system Commercial Industrial 6000 GPD

Bid: $3,500.00
Ships:
Freight
$3,500.00
Plus Shipping
11 hrs
58 mins
Carbon DI Resin Refillable 10" Cartridge Canister Buy Now »
Free Shipping

Carbon DI Resin Refillable 10" Cartridge Canister

Buy: $15.22 Ships:
Free
$15.22
Buy now
12 hrs
53 mins
Aquatic Life RO Buddie Carbon Cartridge Buy Now »
Free Shipping

Aquatic Life RO Buddie Carbon Cartridge

Buy: $12.76 Ships:
Free
$12.76
Buy now
18 hrs
49 mins
Aquatic Life RO Buddie Reverse Osmosis Systems 50-Gallon Three stage Buy Now »
Free Shipping

Aquatic Life RO Buddie Reverse Osmosis Systems 50-Gallon Three stage

Buy: $53.77 Ships:
Free
$53.77
Buy now
19 hrs
57 mins
Spectrapure 90 gallon per day (GPD) Reverse Osmosis Unit Water Filter Purifier Buy Now »

Spectrapure 90 gallon per day (GPD) Reverse Osmosis Unit Water Filter Purifier

Buy: $169.99 Ships:
Based on Zip
$169.99
Plus shipping
Buy now
20 hrs
33 mins
Spectrapure RO 90 GPD Reverse Osmosis Unit Water Filter Purifier Buy Now »

Spectrapure RO 90 GPD Reverse Osmosis Unit Water Filter Purifier

Buy: $169.99 Ships:
Based on Zip
$169.99
Plus shipping
Buy now
20 hrs
43 mins
 6 Stage Aquarium Reef Reverse Osmosis Water (RO/DI) - 100 GPD | Made in USA Buy Now »

6 Stage Aquarium Reef Reverse Osmosis Water (RO/DI) - 100 GPD | Made in USA

Buy: $159.99 Ships:
$15.00
$174.99
Buy now
20 hrs
51 mins
Reverse Osmosis (RO/DI) Aquarium Reef Water Filter System | 75 GPD | USA MADE Buy Now »

Reverse Osmosis (RO/DI) Aquarium Reef Water Filter System | 75 GPD | USA MADE

Buy: $99.99 Ships:
$20.00
$119.99
Buy now
20 hrs
55 mins
MADE IN USA 6 STAGE Aquarium Reef Reverse Osmosis Water 150 GPD MEMBRANE Buy Now »
Free Shipping

MADE IN USA 6 STAGE Aquarium Reef Reverse Osmosis Water 150 GPD MEMBRANE

Buy: $149.00 Ships:
Free
$149.00
Buy now
21 hrs
REPLACEMENT PORTABLE/COUNTER TOP DI/RO AQUARIUM REVERSE OSMOSIS WATER FITLERS Buy Now »
Free Shipping

REPLACEMENT PORTABLE/COUNTER TOP DI/RO AQUARIUM REVERSE OSMOSIS WATER FITLERS

Buy: $19.99 Ships:
Free
$19.99
Buy now
21 hrs
38 mins
SpectraPure Mixed Bed DI Non-Indicating Cartridge 10 inch DI-MB-10 Buy Now »
Free Shipping

SpectraPure Mixed Bed DI Non-Indicating Cartridge 10 inch DI-MB-10

Buy: $26.58 Ships:
Free
$26.58
Buy now
21 hrs
53 mins
  • Item Condition: NewNew SpectraPure Mixed Bed DI Non-Indicating Cartridge 10 inch DI-MB-10 for sale
  • Item Location: Belleville, IL, USA ZIP 62223
  • Shipping Type: Free
  • Expedited Shipping - One-Day Shipping Available
  • Handling Time: 1 business day
  • Returns Accepted
  • Seller:    Feedback: 233,205 / 0%  Top-Rated Seller Top-Rated Seller
  • See other items for sale from
  • See more items like this one
SpectraPure Mixed Bed DI Color-Indicating Standard Cartridge 10 inch DI-MB-CI-10 Buy Now »
Free Shipping

SpectraPure Mixed Bed DI Color-Indicating Standard Cartridge 10 inch DI-MB-CI-10

Buy: $29.99 Ships:
Free
$29.99
Buy now
22 hrs
53 mins
  • Item Condition: NewNew SpectraPure Mixed Bed DI Color-Indicating Standard Cartridge 10 inch DI-MB-CI-10 for sale
  • Item Location: Belleville, IL, USA ZIP 62223
  • Shipping Type: Free
  • Expedited Shipping - One-Day Shipping Available
  • Handling Time: 1 business day
  • Returns Accepted
  • Seller:    Feedback: 232,782 / 0%  Top-Rated Seller Top-Rated Seller
  • See other items for sale from
  • See more items like this one
AQUARIUM REEF REVERSE OSMOSIS DI WATER SYSTEM 80 GPD MADE IN USA Buy Now »

AQUARIUM REEF REVERSE OSMOSIS DI WATER SYSTEM 80 GPD MADE IN USA

Buy: $99.00 Ships:
$10.00
$109.00
Buy now
23 hrs
5 mins
Aquatic Life RO Buddie 3 Stage Reverse Osmosis 50GPD with FREE TUBING!! AL01016 Buy Now »

Aquatic Life RO Buddie 3 Stage Reverse Osmosis 50GPD with FREE TUBING!! AL01016

Buy: $68.99 Ships:
Based on Zip
$68.99
Plus shipping
Buy now
23 hrs
8 mins
Mixed Bed  DI Resin High Purity Great For RO Deionization Aquarium Buy Now »

Mixed Bed DI Resin High Purity Great For RO Deionization Aquarium

Buy: $38.99 Ships:
Free
$38.99
Buy now
23 hrs
9 mins
Aquatic Life Mixed Bed Resin DI Cartridge for RO Buddie RO System - AL01242 Buy Now »

Aquatic Life Mixed Bed Resin DI Cartridge for RO Buddie RO System - AL01242

Buy: $39.99 Ships:
Based on Zip
$39.99
Plus shipping
Buy now
23 hrs
17 mins
SpectraPure MaxCap DI Deionization Standard Cartridge 10 inch DI-MC-10 Buy Now »
Free Shipping

SpectraPure MaxCap DI Deionization Standard Cartridge 10 inch DI-MC-10

Buy: $29.98 Ships:
Free
$29.98
Buy now
23 hrs
32 mins
  • Item Condition: NewNew SpectraPure MaxCap DI Deionization Standard Cartridge 10 inch DI-MC-10 for sale
  • Item Location: Belleville, IL, USA ZIP 62223
  • Shipping Type: Free
  • Expedited Shipping - One-Day Shipping Available
  • Handling Time: 1 business day
  • Returns Accepted
  • Seller:    Feedback: 233,640 / 0%  Top-Rated Seller Top-Rated Seller
  • See other items for sale from
  • See more items like this one
Counter top Reverse Osmosis Water Filter 4 STAGE 2 Outlet 1 drinking  2.Aquarium Buy Now »

Counter top Reverse Osmosis Water Filter 4 STAGE 2 Outlet 1 drinking 2.Aquarium

Buy: $99.00 Ships:
Free
$99.00
Buy now
23 hrs
46 mins
Captive Purity 4 stage RO/DI with xtra cannister. NO RESERVE !!! Bid Now »
Free Shipping

Captive Purity 4 stage RO/DI with xtra cannister. NO RESERVE !!!

Bid: $175.00
Ships:
Free
$175.00
23 hrs
58 mins
LiquaGen - Portable Reverse Osmosis Dual Use (Drinking + 0 TDS Aquarium Reef ... Buy Now »
Free Shipping

LiquaGen - Portable Reverse Osmosis Dual Use (Drinking + 0 TDS Aquarium Reef ...

Buy: $191.37 Ships:
Free
$191.37
Buy now
1 day
13 mins
IceCap Smart RO/DI System 100gpd Buy Now »
Free Shipping

IceCap Smart RO/DI System 100gpd

Buy: $449.99 Ships:
Free
$449.99
Buy now
1 day
56 mins
Aquatic Life 10' x 2.5' Clear Refillable Cartridge for DI Resin and Other Media Buy Now »
Free Shipping

Aquatic Life 10' x 2.5' Clear Refillable Cartridge for DI Resin and Other Media

Buy: $12.10 Ships:
Free
$12.10
Buy now
1 day
1 hr
18 mins
 6 STAGE Aquarium Reef Reverse Osmosis Water RO/DI 80 GPD MEMBRANE Buy Now »

6 STAGE Aquarium Reef Reverse Osmosis Water RO/DI 80 GPD MEMBRANE

Buy: $139.00 Ships:
$20.00
$159.00
Buy now
1 day
1 hr
39 mins
Aquatop Weighted Sponge Filter 180 Gallon 35 Pores Linear Inch Buy Now »
Free Shipping

Aquatop Weighted Sponge Filter 180 Gallon 35 Pores Linear Inch

Buy: $16.58 Ships:
Free
$16.58
Buy now
1 day
1 hr
45 mins
Aquatic Life RO Buddie Replacement Sediment Cartridge 330249 Ships Free Buy Now »
Free Shipping

Aquatic Life RO Buddie Replacement Sediment Cartridge 330249 Ships Free

Buy: $9.50 Ships:
Free
$9.50
Buy now
1 day
2 hrs
6 mins
Aquatic Life RO Buddie Three Stage Reverse Osmosis 50 Gallon Buy Now »
Free Shipping

Aquatic Life RO Buddie Three Stage Reverse Osmosis 50 Gallon

Buy: $56.69 Ships:
Free
$56.69
Buy now
1 day
2 hrs
8 mins
Aquatic Life RO Buddie Three Stage Reverse Osmosis 50 Gallon Buy Now »
Free Shipping

Aquatic Life RO Buddie Three Stage Reverse Osmosis 50 Gallon

Buy: $55.22 Ships:
Free
$55.22
Buy now
1 day
2 hrs
10 mins
OCEANIC STINGRAY AQUARIUM REEF REVERSE OSMOSIS RO /DI 4 STAGE COLOR CHANGING DI Buy Now »

OCEANIC STINGRAY AQUARIUM REEF REVERSE OSMOSIS RO /DI 4 STAGE COLOR CHANGING DI

Buy: $114.45 Ships:
Free
$114.45
Buy now
1 day
2 hrs
23 mins
Aquatic Life RO Buddie Three Stage Reverse Osmosis 50 Gallon Buy Now »
Free Shipping

Aquatic Life RO Buddie Three Stage Reverse Osmosis 50 Gallon

Buy: $64.52 Ships:
Free
$64.52
Buy now
1 day
2 hrs
24 mins
Aquatic Life Float Valve Kit Buy Now »
Free Shipping

Aquatic Life Float Valve Kit

Buy: $23.81 Ships:
Free
$23.81
Buy now
1 day
2 hrs
41 mins
AquaticLife Float Valve Kit for RO & RO/DI Systems Buy Now »
Free Shipping

AquaticLife Float Valve Kit for RO & RO/DI Systems

Buy: $26.37 Ships:
Free
$26.37
Buy now
1 day
3 hrs
52 mins
Microline TFC 25 gpd Membrane S1227RS - Bid Now » Buy Now »
Free Shipping

Microline TFC 25 gpd Membrane S1227RS -

Bid: $24.50
Buy: $32.88
Ships:
Free
$24.50
Buy now
1 day
5 hrs
49 mins
REVERSE OSMOSIS DI/RO AQUARIUM REEF WATER SYSTEM 150 GPD 0 ppm MADE IN USA Buy Now »

REVERSE OSMOSIS DI/RO AQUARIUM REEF WATER SYSTEM 150 GPD 0 ppm MADE IN USA

Buy: $149.00 Ships:
Free
$149.00
Buy now
1 day
6 hrs
28 mins
4 RO/DI AQUARIUM REVERSE OSMOSIS WATER FILTERS/MEMBRANE Buy Now »

4 RO/DI AQUARIUM REVERSE OSMOSIS WATER FILTERS/MEMBRANE

Buy: $56.60 Ships:
$9.98
$66.58
Buy now
1 day
7 hrs
5 mins
  • Item Condition: NewNew 4 RO/DI AQUARIUM REVERSE OSMOSIS WATER FILTERS/MEMBRANE for sale
  • Item Location: Canyon Country, CA, USA ZIP 91387
  • Shipping Type: Flat Rate
  • Shipping Cost: $9.98
  • Expedited Shipping
  • Handling Time: 1 business day
  • Returns Accepted
  • Seller:    Feedback: 10,414 / 0%  Top-Rated Seller Top-Rated Seller
  • See other items for sale from
  • See more items like this one
SPECTRAPURE 60GPD REPLACEMENT RO MEMBRANE - SPECTRAPURE Buy Now »

SPECTRAPURE 60GPD REPLACEMENT RO MEMBRANE - SPECTRAPURE

Buy: $48.99 Ships:
Free
$48.99
Buy now
1 day
12 hrs
36 mins
aquafx 100 gpd ro membrane ((stage 3) Buy Now »
Free Shipping

aquafx 100 gpd ro membrane ((stage 3)

Buy: $69.49 Ships:
Free
$69.49
Buy now
1 day
13 hrs
3 mins
 dual canister system for aquariums, 10-inch Buy Now »
Free Shipping

dual canister system for aquariums, 10-inch

Buy: $48.64 Ships:
Free
$48.64
Buy now
1 day
13 hrs
30 mins
Aquatic Life DI Color Changing Mixed Bed Resin Cartridge Buy Now »

Aquatic Life DI Color Changing Mixed Bed Resin Cartridge

Buy: $22.97 Ships:
$4.99
$27.96
Buy now
1 day
14 hrs
33 mins
 7 Stage RO/DI AQUARIUM REEF REVERSE OSMOSIS Deionization System 100 GPD Buy Now »

7 Stage RO/DI AQUARIUM REEF REVERSE OSMOSIS Deionization System 100 GPD

Buy: $129.00 Ships:
$20.00
$149.00
Buy now
1 day
15 hrs
53 mins
  • Item Condition: New other (see details)
  • Item Location: Corona, CA, USA ZIP 92879
  • Shipping Type: Flat Rate
  • Shipping Cost: $20.00
  • Handling Time: 2 business days
  • Returns Accepted
  • Seller:    Feedback: 2,357 / 0%  Top-Rated Seller Top-Rated Seller
  • See other items for sale from
  • See more items like this one
Aquatic Life Buddie Fit 500259 1/4-Inch Press Hose Bib with 2-Pack Blue Clips Buy Now »
Free Shipping

Aquatic Life Buddie Fit 500259 1/4-Inch Press Hose Bib with 2-Pack Blue Clips

Buy: $16.08 Ships:
Free
$16.08
Buy now
1 day
17 hrs
30 mins

 Search eBay 
Search For In Category Min.
Price
Max.
Price
# Items
Per Page