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126 - 150 of 168
Marine Depot KleanWater 6-Stage Economy RO/DI System - 100 GPD

Marine Depot KleanWater 6-Stage Economy RO/DI System - 100 GPD

Made in the USA! We have assembled a high quality yet economical water purifying system that turns ordinary tap water into ultra-pure, zero-TDS, water for your aquarium. Harmful impurities such as nitrates, phosphates, silica...

$229.99
JG 1/4 inch x 3/8in Reducer - Grey

JG 1/4 inch x 3/8in Reducer - Grey

Color: Gray John Guest Part# : PI061208S How to make a connection Cut tube square. It is essential that the outside diameter be free of score marks and that burrs and sharp edges be removed before inserting into fitting. Fo...

$2.99
Mur-Lok® 1/2 Inch Plug-In 90 Degree Elbow

Mur-Lok® 1/2 Inch Plug-In 90 Degree Elbow

Color: White Mur-lok Part# : T0820866 Tube O.D.: 1/2" Stem: 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 fitting ...

$3.99
Hanna Instruments Primo TDS Tester

Hanna Instruments Primo TDS Tester

Direct probe connection Automatic calibration Automatic Temperature Compensation The Primo series of testers provide a fast and dependable way to measure the total dissolved solids or conductivity in your water samples. It...

$37.00
SpectraPure® CSP Reverse Osmosis System w/ Automatic Flush

SpectraPure® CSP Reverse Osmosis System w/ Automatic Flush

SpectraPure® 90gpd CSP RO System w/ Automatic Membrane Flush incorporates a high-silicate removal TFC membrane and 0.5 micron MicroTec™ Sediment and Carbon Block Filters. Automatic Flush System, ASO Valve, and Float Valve are inc...

From $279.99
Self-piercing Saddle Valve

Self-piercing Saddle Valve

Pierces copper pipe to feed RO or RO/DI units. (CP Part No. PSV14, KMPart No. SV, SP Part No. XV-PRC-4T) **Variations of this product can be found in many online stores. The version we carry is of the highest quality....

$8.49
SpectraPure® MaxCap 2-Stage Add-on Assembly System

SpectraPure® MaxCap 2-Stage Add-on Assembly System

Max-Cap DI Retro-Fit Kit, 2 Sta w/ Silica Buster, 10in Clr Carts, TDS Mtr, w/Filt Wr Everything you need for most systems to add a two stage DI to your RO system with MaxCap high capacity DI cartrdige.

$105.99
Mur-Lok® 1/2 Inch x 1/2 Inch Union Connector

Mur-Lok® 1/2 Inch x 1/2 Inch Union Connector

Color: White Mur-lok Part# : R0820826 Tube O.D.: 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 fitting connections....

$2.99
AquaFX Dolphin Revese Osmosis System- 100 GPD

AquaFX Dolphin Revese Osmosis System- 100 GPD

Made in the USA! Ideal for Fresh Water, Fish Only Tanks, Planted Tanks, Drinking and more! The Dolphin RO system from AquaFX is one of the most popular RO systems for Fresh Water, Planted tanks and Chiclid enthusiasts. ...

$139.99
Captive Purity Deluxe RO Filter System

Captive Purity Deluxe RO Filter System

Captive Purity represents the highest quality in reverse osmosis technology. Captive Purity Reverse Osmosis Systems meet stringent standards and far exceeds the quality of systems from other manufacturers. A wide variety of option...

From $185.99
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
Marine Depot KleanWater 6-Stage Advanced RO/DI System - 100 GPD

Marine Depot KleanWater 6-Stage Advanced RO/DI System - 100 GPD

Made in the USA! We have assembled a high quality yet economical water purifying system that turns ordinary tap water into ultra-pure, zero-TDS, water for your aquarium. Harmful impurities such as nitrates, phosphates, silica...

$299.99
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
Captive Purity Pro RO/DI Filter System - Clear Canisters

Captive Purity Pro RO/DI Filter System - Clear Canisters

Captive Purity represents the highest quality in reverse osmosis technology. Captive Purity Reverse Osmosis Systems meet stringent standards and far exceeds the quality of systems from other manufacturers. A wide variety of option...

From $220.99
Marine Depot KleanWater Basic RO System - 100 GPD

Marine Depot KleanWater Basic RO System - 100 GPD

Made in the USA! We have assembled a high quality yet economical water purifying system that turns ordinary tap water into ultra-pure water for your aquarium or sparkling, great-tasting healthy drinking water for you and your...

$149.99
Mur-Lok® 1/4 Inch EZ Faucet Adapter Kit

Mur-Lok® 1/4 Inch EZ Faucet Adapter Kit

Color: Grey Mur-lok Part# : H0930425 Tube O.D.: 1/4" Female Thread : 1/2" NPSM Male Thread: 1/2" NPSM The EZ Faucet Adapter Kit provides a simple connection for installing any water system, from ultra pure to under the sink...

$17.49
HM Digital Waterproof pH Meter

HM Digital Waterproof pH Meter

Professional Waterproof pH/Temp Meter Very reliable waterproof pH meter measures with an accuracy: of +/- 0.02 pH. Measures pH and Temperature Auto-ranging three point calibration with digital fine tuning Includes 4...

$79.99
Bathroom to Kitchen Faucet Adapter 15/16 Inch Male to 55/64 Inch Male

Bathroom to Kitchen Faucet Adapter 15/16 Inch Male to 55/64 Inch Male

Adapter to convert the size of your bathroom faucet outlet (55/64” – 27) to the size of a kitchen faucet (15/16” – 27). Once the adapter is installed, you are able to use a standard kitchen faucet adapter for your RO or RO/DI syst...

$5.99
JACO Union Connector - 1/4 inch Tube O.D. Female x 1/4 inch Tube O.D. Female

JACO Union Connector - 1/4 inch Tube O.D. Female x 1/4 inch Tube O.D. Female

JACO Part# : 15-4 Note: Tube O.D. and pipe thread measurements are two different standards of measurements. They do not connect. As an example, 1/4" Female Tube O.D. will not connect to a 1/4" Male Pipe Thread.

$2.49
Plastic RO Tube Cutter

Plastic RO Tube Cutter

Plastic tube cutter Cut polyethylene, nylon, or polypropylene with this easy-to-handle razor/edged tube cutter. It closes automatically, assuring clean and square cuts. It may also be used with vinyl, teflon®, polyurethane, rubbe...

$16.49
JG 1/4 inch x 1/4 inch Stem Adapter - White

JG 1/4 inch x 1/4 inch Stem Adapter - White

Color: White John Guest Part# : CI050822W Stem O.D.: 1/4" Thread NPTF: 1/4" How to make a connection: Cut tube square. It is essential that the outside diameter be free of score marks and that burrs and sharp edges be remov...

$1.49
SpectraPure® MaxCap 1-Stage Add-on Assembly System

SpectraPure® MaxCap 1-Stage Add-on Assembly System

Max-Cap DI Retro-Fit Kit, 1 Sta, 10in Clr Cart, TDS Mtr, w/Filt Wr Everything you need for most systems to convert a single stage DI to a dual stage DI with MaxCap high capacity DI cartrdige.

$77.49
AquaFX Mako RO/DI System

AquaFX Mako RO/DI System

Made in the USA! The Mako 5-Stage Reverse Osmosis Deionization System is the Barracuda`s big brother. It has 2 DI canisters so the DI wont need to be serviced as often. The AquaFX Mako also sports a factory Dual Inline TDS Me...

From $289.99
SpectraPure® Pressure-Switch Operated BP Kits HF

SpectraPure® Pressure-Switch Operated BP Kits HF

SpectraPure® PRESSURE-SWITCH OPERATED BOOSTER PUMP KIT HF Model # : SPBPHF-PS-115 Maximum System GPD: 100 SpectraPure® Booster Pump Kits are ideal for use on water sources with pressures below 40 psi (2.8 bar) such as priva...

$229.99
SpectraPure® Maxpure 90 GPD RO System

SpectraPure® Maxpure 90 GPD RO System

SpectraPure® MaxPure Systems incorporate a high-silicate removal TFC membrane, a 1 micron MicroTec Sediment Filter, and a Carbon Block Filter. MaxPure Systems are available from 25 gpd (95 LPD) to 180 gpd (680 LPD) production rate...

$159.99
126 - 150 of 168
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