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76 - 100 of 167
HM Digital Triple Inline TDS Monitor

HM Digital Triple Inline TDS Monitor

The TRM-1 is a three-sensor TDS monitor that can monitor the TDS levels at three different points. It is perfect for RO/DI systems and other types of filtration and purification systems. Features Displays TDS levels of the t...

$44.99
AquaticLife Solid Carbon Block Pre-filter Reverse Osmosis Cartridge

AquaticLife Solid Carbon Block Pre-filter Reverse Osmosis Cartridge

Feature(s): 9 ¾” Standard size cartridge includes dual rubber gaskets to ensure 100% water flow-through. Activated Carbon removes chlorine and chloramines from most incoming tap water supplies for up to six months. Durable o...

$10.49
SpectraPure® Auto Shut Off Valve Float Kit for RO Systems

SpectraPure® Auto Shut Off Valve Float Kit for RO Systems

SpectraPure® Auto Shut Off Valve Float Kit for RO System Positive shut-off; completely shuts off all waste & product water: great for topping off reservoirs Economical The Auto Shut-Off Float Kit is not recommended f...

$45.99
Kent Marine Hi-S TFC Membrane

Kent Marine Hi-S TFC Membrane

Replacment Kent Marine 35GDP Hi-S TFC membrane Please note that these replacement cartridges are interchangeable with Captive Purity`s, Kent Marine`s, and SpectraPure`s RO or RO/DI units. We have researched for the...

From $98.49
Drain Saddle Adapter

Drain Saddle Adapter

Allows running RO waste line to drain directly to your drain pipe. Requires drilling a hole in the pipe. (CP Part No. DS14, KM Part No. DSAD, SP Part No. XDS-4T) Fits 1-1/4" to 1 3/4" drain pipes. **Variations of this pro...

$4.99
AquaticLife 1 Micron Pre-Filter Reverse Osmosis Cartridge

AquaticLife 1 Micron Pre-Filter Reverse Osmosis Cartridge

Feature(s): Spun Polypropylene Sediment filter removes particulate material found in tap water. 9 7/8" Standard size cartridge is self-sealing for a tight fit in RO units. Design lends itself to long life and increased hold...

$5.99
AquaFX Barracuda RO/DI System - 100 GPD

AquaFX Barracuda RO/DI System - 100 GPD

Made in the USA! The Barracuda RO/DI is very popular with residential reef enthusiasts, engineered to meet the specific needs of your top off and make up water. AquaFX is proud to the Barracuda recognized by About.com for bei...

$169.99
Feed Water Adapter For RO System

Feed Water Adapter For RO System

Standard pipe fitting to feed RO or RO/DI filter. 1/2" male x 1/2" Female x 1/4" tubing. This fitting allows you connect your RO or RO/DI unit directly to the plumbing underneath the sink. A ball valve is include so you can easil...

$17.99
RO Housing Wrench

RO Housing Wrench

RO Housing wrench for Captive Purity and SpectraPure RO and RO/DI units only. May not be compatible with all RO/DI brands. **Variations of this product can be found in many online stores. The version we carry is of the h...

$3.99
Pressure Gauge Only: 1/8 inch NPT

Pressure Gauge Only: 1/8 inch NPT

Pressure guage for easy troubleshooting. 1/8" NPT **Variations of this product can be found in many online stores. The version we carry is of the highest quality. Although this item is eligible for price matching under our...

$14.99
AquaFX High Silicate Removal DI Cartridge

AquaFX High Silicate Removal DI Cartridge

AquaFx DI is the leader in making sure your final product water is 0 TDS. The resin AquaFx uses is ideal for making laboratory grade type 1 water, which is perfect for top off water for your reef, salt and corals. AqauFX will alwa...

$25.99
AquaFX SUPER High Capacity Replacement Carbon Block Filter Cartridge

AquaFX SUPER High Capacity Replacement Carbon Block Filter Cartridge

AquaFx carbon blocks are the most recognized and widely used carbon blocks in the industry, and after 15 years its clear to see why. The raw carbon used in the AquaFX carbon blocks offers only the best in chlorine removal and ...

$14.99
JG 1/4 inch x 1/4 inch PVC Needle Valve for Calcium Reactors

JG 1/4 inch x 1/4 inch PVC Needle Valve for Calcium Reactors

Ultra-Precision Ball Valve. Great controlling calcium reactor effluent drip rates! Rated up to 125 PSI. Uses standard 1/4" RO tubing used on many reactors. John Guest quick-connect fittings allows for easy installation.

$24.49
SpectraPure® Chlorine Test Kit With 10 Tablets

SpectraPure® Chlorine Test Kit With 10 Tablets

Model # : TK-CL-10 Chlorine Test Kit with 10 tablets SpectraPure® Chlorine Test Kits are used for testing the chlorine removal ability of carbon filters by sampling the waste water stream.

$7.99
Mur-Lok® 1/2 Inch X 1/2 Inch NPTF Male Connector

Mur-Lok® 1/2 Inch X 1/2 Inch NPTF Male Connector

Color: White Mur-lok Part# : O0820816 Tube O.D.: 1/2" Thread NPTF: 1/2" Mur-lok fitting information Mur-lok® Polypropylene Fittings have a dual o-ring design at each tube connection, giving end users confidence in their f...

$3.49
AquaticLife Mixed Bed Resin Reverse Osmosis Cartridge

AquaticLife Mixed Bed Resin Reverse Osmosis Cartridge

Feature(s): Cation and Anion resins (H+ and OH-) remove the remaining total dissolved solids (TDS) from membrane-filtered water. 10" standard cartridge size includes a top gasket for a secure fit. Cartridge housing shape len...

$19.99
1/4 inch RO Tubing - Yellow

1/4 inch RO Tubing - Yellow

10-foot roll of 1/4" Reverse Osmosis Tubing - Yellow **Variations of this product can be found in many online stores. The version we carry is of the highest quality. Although this item is eligible for price matching under our L...

From $2.50
SpectraPure® CSPDI RO/DI System w/ Manual Membrane Flush

SpectraPure® CSPDI RO/DI System w/ Manual Membrane Flush

Overview: SpectraPure® 180GPD CSPDI RO/DI System w/ Manual Membrane Flush. Upgraded for 2014, the new CSPDI incorporates SpectraPure’s individually tested, 99% ultra-high-rejection SpectraSelect™Plus TFC membrane, 0.5 micron Se...

From $289.99
Mur-Lok® 1/4 Inch EZ Faucet Adapter

Mur-Lok® 1/4 Inch EZ Faucet Adapter

Color: White Mur-lok Part# : H0830425 Tube O.D.: 1/4" Female: 1/2" NPSM Male: 1/2" NPSM EZ Faucet Adapter provides a simple connection for installing any water system,from ultra pure to under the sink carbon filters. The EZ...

$5.99
TDS Calibration Solution

TDS Calibration Solution

Calibration Fluid for TDS meter with automatic temperature compensation. **Variations of this product can be found in many online stores. The version we carry is of the highest quality. Although this item is eligible for p...

$1.99
Replacement TFC Membrane Housing

Replacement TFC Membrane Housing

Replacement TFC Membrane Housing: 1/8" FPT x 1/8" FPT x 1/8" FPT. **Variations of this product can be found in many online stores. The version we carry is of the highest quality. Although this item is eligible for price m...

$18.99
JACO 1/4 inch Pipe Nipple

JACO 1/4 inch Pipe Nipple

JACO Part# : PN-4

$1.49
JG  1/4 Inch 3-Way Ball Valve

JG 1/4 Inch 3-Way Ball Valve

Three Way Ball Valve w/ 1/4" John Guest Push Fittings. Fits standard 1/4" RO tubing. Great for use with calcium reactors or RO/DI systems. Rated to 125 psi. The handle has 180° rotation and lies over the open port. When the...

$21.49
1/4 inch RO Tubing - White

1/4 inch RO Tubing - White

10-foot roll of 1/4" Reverse Osmosis Tubing - White **Variations of this product can be found in many online stores. The version we carry is of the highest quality. Although this item is eligible for price matching under our Lo...

From $2.50
Single Filter Housing Bracket

Single Filter Housing Bracket

Metal Bracket for RO Filters—will hold one filter housings **Variations of this product can be found in many online stores. The version we carry is of the highest quality. Although this item is eligible for ...

$3.49
76 - 100 of 167
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