Item Description

SquareTrade © AP6.0
Psalm 78:15 He split the rocks in the desert and gave them water as abundant as the seas;

200GPD Reefmaster RO/DI System

De-ionizing Filter for Distilled Quality Water
Second Inline DI to Ensure Purity
Providing the quality water you deserve at a price you can afford!

200GPD Reefmaster System

Image - Reefmaster System
Reefmaster RO/DI
Connection Choices
Image - Garden Hose Adapter Image - Under Sink Kit Image - SNAP Adapter
Garden Hose Adapter Under Sink Adapter SNAP Adapter
Each system comes with your choice of one of the above shown connection options. If more than one adapter is desired, each additional adapter is $8. to specify.


We accept PayPal, Visa, Master Card, American Express, and Discover. Payment must be made upon purchase. To pay with credit card call us at: 1-888-661-9769



Shipping is FREE in the contiguous US, insurance included. Orders ship by UPS within 2 business days of cleared payment. Delivery takes 3-5 days after the order has shipped.

Water Quality Association MemberBetter Business Bureau Accredited Business


  • Portable Reefmaster RO/DI System
  • Made in the USA
  • Removes 99.9% of Water Contaminates
  • Color Change DI Filter
  • 2nd Inline DI Filter
  • Ideal for Reef Aquariums
  • Dual High-Rejection GE Osmonics TFC 100GPD Membranes
  • Pre-Assembled
  • Color Coded Tubing
  • Manual Flush Flow Restrictor
  • Check Valve
  • All Clear Filter Housings
  • Mounting Bracket
  • Standard Sized Filters
    • 1µ Sediment
    • 1µ Carbon
    • Color change DI
    • Inline DI
  • 3 Connection Choices Available ( to specify)
  • Installation & Maintenance Manual
  • 1 year warranty
  • 30-day Satisfaction Guarantee
  • Free Phone and/or email Tech Support after the sale
  • Full Customer support before, during & after the sale! Just call 1-888-661-9769

Upgrades & Accessories Available

Click here for more information on available upgrades & accessories


If you own a Reef aquarium, or if you require ultra pure water for any other reason, you know how expensive distilled water can be. Eliminate the hassle and cost of constantly buying distilled water by purchasing our Reefmaster RO/DI system! This high quality system hooks up easily with your choice of 3 connection types available, and produces 99.9% pure water. The second inline DI filter ensures high purity water and increases filter effeciency. Our high quality Reefmaster system will ensure that your have the pure water you need without worrying about making a trip to buy it!

Portable Reefmaster RO/DI System - Portable System: This system is designed for portability, hook it up, get the water you need, then unhook it and store it out of the way. The under sink connection kit allows you to hook it up more permanent manner should you so desire.

Made in the USA - Built right here in America, you can proudly purchase this system and know you are contributing to the American economy!

Removes 99.9% of water contaminates - Removes a wide range of contaminates including sodium, aluminum, lead, copper, arsenic, mercury, calcium, phosphate, iron, magnesium, zinc, chloride, nitrate, silicate, cyanide, sulphide, nickel, silver, bicarbonate, manganese, ammonium, barium, and chromium, as well as removing 95-97% of bacteria! The RO does most of the work, removing 95-97%, with the two DI filters removing what remains, giving you 99.9% effective removal.

Color Change DI Filter - Filter changes color to indicate when it is exhausted. Provides a visual indicator that the filter needs to be replaced.

Inline DI Filter - Second inline DI filter ensures the highest quality water and allows the full size filter to completely exhaust before changing it, increasing filter efficiency! Larger inline filter provides more capacity than standard inline DI filters on the market.

Ideal for Reef Aquariums - With the DI filters, this system will produce the ultra pure water that most reef aquarists prefer, and will allow you to make water whenever you need it. No longer will you have to make a trip to get water, leaving you more time to enjoy your aquarium or follow other pursuits, as well as leaving more money in your pocket.

Dual High Rejection GE Osmonics 100GPD membranes - This system comes standard with dual high quality 100 gallon per day (GPD) GE Osmonics membranes for a total output of 200GPD. Manufactured by GE, you can be assured you are getting a quality membrane that will provide you the pure water you need.

Pre-Assembled - This system comes fully assembled, all you have to do is hook it up to your water supply and turn it on. In no time you will be producing distilled quality water right in your own home!

Color-Coded Tubing - Each connection is supplied with approximately 4-5 foot of color coded tubing, which makes hooking the system up quick and simple and reduces common hookup mistakes.

Manual Flush Flow Restrictor - Regulates waste water, providing proper pressure against the membrane to ensure high efficiency. The manual flushing valve allows you to perform additional flushing on the membrane, extending membrane life and providing peak efficiency.

Check Valve - Prevents any back pressure from pushing water back through the membrane and down the drain, reducing waste. A necessity when using the system with a pressurized storage tank.

Clear Filter Housings - Clear housings allow you to monitor the filters, namely the sediment filter that can darken as it fills up with sediment and the color change DI filter that will change color as it is exhausted.

Standard Sized Filters - We use industry standard 10" x 2.5" filters that are readily available at a large number of hardware and aquarium stores. We also strive to offer the highest quality filters at hard to beat prices! System comes with 1µ (micron) sediment, 1µ carbon block, and color changing DI filter. Also includes inline DI filter.


If you would like to add upgrades or additional accessories please follow these instructions:
If paying by PayPal:
When making payment there is a section to add additional funds. Add the required amount for the accessories you desire and in the "Notes" section detail the accessories you are requesting. You may also email us detailing the upgrades & accessories you want and we can send you a PayPal invoice for the adjusted total.
If paying by Credit Card:
Call 888-661-9769 to pay by credit card. When providing billing information let us know what accessories you want and we will adjust the total for you before processing your payment.

Available Accessories

Auto Shut Off Valve Upgrade - $16
Recommended when using the system with a float or tank. Shuts the water to the membrane off when the float activates or the tank is full, eliminating unnecessary waste water.
4 Gallon Storage Tank - $44
Pressurized storage tank with ball valve for storing purified water. Capable of storing approximately 3.2 gallons of water, depending on water pressure. Comes with connection kit that includes T-fitting, tubing, & inline ball valve. An auto shut off valve is recommended when using a pressurized storage tank.
14 Gallon Storage Tank - $114
Pressurized storage tank with ball valve for storing purified water. Capable of storing approximately 10 gallons of water, depending on water pressure. Comes with connection kit that includes T-fitting, tubing, & inline ball valve. An auto shut off valve is recommended when using a pressurized storage tank.
Aquatec 8800 Booster Pump - $129
Electric booster pump to increase pressure to system, increasing production and decreasing waster. Required in homes with less than 40psi. Simply plug it in when you want to make water and unplug it when you are done. If using with a tank or float valve the ESO & TSO switches are required for proper operation. NOTE: This higher pressure pump is required for larger membranes used in these systems. Lower pressure pumps (such as the Aquatec 6800) will not provide satisfactory results
ESO & TSO Switches - $40
Electronic switches for use with the Aquatec booster pumps. Required when using a tank or float valve. TSO switch detects when tank is full or float activates, shutting off pump and triggering the ESO. ESO switch shuts water to the system off, eliminating unnecessary waste water. NOTE: The ESO takes place of the auto shut off valve, if using the ESO switch the auto shut off valve is not needed.

About De-Ionization (DI)

How De-Ionization (DI) Works

De-ionization, (commonly referred to as DI), is a common process for producing ultra pure water. The DI filter is filled with resin beads, some with a negative charge and some with a positive charge. When you test your water with a TDS meter (total dissolved solids), it gives you a number that tells you the sum of the different contaminates in your water. All of these contaminates are either negatively or positively charged, so when they pass through the DI filter they are attracted to the oppositely charged resin beads. Since the DI filter has both negatively and positively charged resin beads it is able to remove 99% of the contaminates in your water. Reverse Osmosis (RO) is capable of removing 95-97% of all contaminates, so when the remaining 3-5% is passed through a DI filter you are effectively removing 99.9% of the contaminates. This quality of water is comparable to distilled water and is excellent for use in reef aquariums and other application where distilled water is used.

Is It Safe To Drink DI Water?

DI water is 99% pure water, comparable to distilled water, so it is just as safe to drink as distilled water is. Due to the fact that it is so pure, a lot of people do not like the taste, so it's potability (drinkability) comes down to your own personal opinion.


About Reverse Osmosis (RO)

What is Reverse Osmosis?
Normal Osmosis
Normal Osmosis
Image - Reverse Osmosis
Reverse Osmosis

Reverse osmosis, also known as hyperfiltration, is the finest filtration known. This process will allow the removal of particles as small as dissolved individual ions from a solution. Reverse osmosis is used to purify water and remove ions and dissolved organic molecules. It can be used to purify fluids such as ethanol and glycol, which will pass through the reverse osmosis membrane, while rejecting other ions and contaminants from passing. The most common use for reverse osmosis is in purifying water. It is used to produce water that meets the most demanding specifications that are currently in place. If two aqueous solutions of different salinity are separated by a semi-permeable membrane, osmosis will cause water to pass through the membrane in the direction of the more concentrated solution, therefore diluting it. By applying sufficient pressure to the more concentrated liquid, the direction of osmosis can be reversed. In this way, we can mechanically reverse the flow and separate the concentrated solution into its constituents: the water and the dissolved solids. One part is called the permeate, or filtrate, and the other is the reject stream, or concentrate.

How Does A Membrane Separate Substances?
Image - Molecules

Reverse osmosis uses a membrane that is semi-permeable, allowing the fluid that is being purified to pass through it, while rejecting the contaminants that remain. Most reverse osmosis technology uses a process known as crossflow to allow the membrane to continually clean itself. As some of the fluid passes through the membrane the rest continues downstream, sweeping the rejected species away from the membrane, in a concentrated brine reject water. The process of reverse osmosis requires a driving force to push the fluid through the membrane, and the most common force is pressure from a pump. The higher the pressure, the larger the driving force. As the concentration of the fluid being rejected increases, the driving force required to continue concentrating the fluid increases.

Reverse osmosis is capable of rejecting bacteria, salts, sugars, proteins, particles, dyes, and other constituents that have a molecular weight of greater than 150-250 daltons. The separation of ions with reverse osmosis is aided by charged particles. This means that dissolved ions that carry a charge, such as salts, are more likely to be rejected by the membrane than those that are not charged, such as organics. The larger the charge and the larger the particle, the more likely it will be rejected.

Size Comparison
Image - Water Comparison Image - Inorganics Comparison Image - Organic Comparison
Comparatively, if a water molecule was the size of a tennis ball, then... Most metals and inorganic compounds would be the size of a softball... Most organic compounds would be the size of a basketball...
Image - Virus Comparison Image - Bacteria Comparison Image - Protozoa Comparison
Most viruses would be the size of a bus... Most bacteria would be the size of a pyramid... and most protozoa would be the size of Mt. St. Helens!
Standard RO/DI System Deluxe DI System Drinking/Aquarium Water Combo
A low cost solution for producing distilled quality water. Simple system provides the high purity water used in reef aquariums and other high purity water industires. Simple portable system is great for everyone from the weekend enthusiast to the hardcore aquarist. 4 canister system allows for 2 full size DI filters, providing the highest quality water with the most efficiency. As the first filter wears out the second filter ensures you are still getting the pure water you need. Once the first filter is completely exhausted replace it with the second filter and put a new filter in, allowing you to get the most efficiency out out every DI filter! Our high quality RO/DI Combo System starts with a quality 4-stage RO for your drinking water. For you aquarium water the water also passes through a full size DI filter, providing the ultra purity water reef tanks need. Our bypass model uses valves to control the flow of water through the DI, while our Dual Output model has a separate line specifically for DI treated water.
Drinking Water RO RFDIFK Replacement Filter Set Handheld TDS Meter
Bottled quality drinking water at your fingertips! We offer a number of systems designed to purify your drinking water, ensuring clean, healthy water for your whole family. Designed for installation under most sinks, these quality USA made systems are easy to install and will last for years to come. Replacement filter set for Reefmaster systems. Includes 1µ sediment filter, 1µ carbon block filter, color change DI filter, & inline DI filter. Hand held TDS (total dissolved solids) meter measure how well your DI filter is working. Great for monitoring the DI filters as well as the RO membrane, letting you know exactly when they need changed.
  • Abundant Flow Water Systems, Incorporated

  • Abundant Flow Water Systems, Inc. ©Copyright 2009 All Rights Reserved