Pro-OX Well Water Iron Filters Remove Iron, Sediment, Rust.

Pro-OX Iron Filters Last Many Years Longer Than Other Types & Use Less Backwash Water.

Complete System includes NSF Certified Pro-OX Filter Media, Filter Tank, Auto-Backwash Control Valve, FREE SHIPPING.

10 Year Warranty on Tank, 5 Year Warranty on Control Valve! MONEY-BACK SATISFACTION GUARANTEE!
satisfaction guarantee 

Pro-OX Iron Filter 7000-SXT  3.0 CF

Pro-OX Iron Filter 7000-SXT 3.0 CF

Satisfaction Guaranteed! Free Shipping in Continental U.S.

Code: FE009250 List Price: $0.00 Your Price: Shipping Weight: 450.00 lbs. Manufacturer: CWS Manufacturer#: 70AFB-14-FIL
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Choose your options:


Pipe Connector Options:

Odors? Add Chlorine Side Tank:

Add Flow Sensor for Metered Flow Backwash:

Discounted Stainless Steel Flex Lines:

Choose Blue or Black Tank Color:

Questions? Get a Fast Answer to your water treatment problems, click here!

Sizing Guide

Model Number of Bathrooms in Home Flow Rate* Backwash Flow Rate Dimensions
0.75 CF 1 - 2 8 GPM 5 GPM Diameter: 8" Height: 51.5"
1.0 CF 1 - 2 10 GPM 7 GPM Diameter: 9" Height: 55.5"
1.5 CF* 1 - 2 12 GPM 10 GPM Diameter: 10" Height: 61.5"
2.0 CF 2 - 3 14 GPM 12 GPM Diameter: 12" Height: 59.5 "
2.5 CF 2 - 4 15 GPM 14 GPM Diameter: 13" Height: 61.5"
3.0 CF 2 - 5 20 GPM 18 GPM Diameter: 14" Height: 72.5 "

Flow Rate: Refers to maximum recommended Gallons Per Minute ("GPM") which means how fast the water is flowing. The 1.5 CF model works best for most homes (such as 2 -3 bathroom homes with 2 - 6 persons). However for homes with 2 - 4 persons, the 0.75 or 1.0 CF models work great. Higher flow rates are possible through these systems, this is just meant as a guide or suggested use.

Have Questions? Call 888-600-5426 and speak to one of our certified water treatment technicians for technical help or if you have questions about sizing or flow rates.

Removal Rate: Removes up to 30 PPM iron, 15 PPM manganese, 10 PPM hydrogen sulfide (optional chlorine feed may be needed for extremely bad water).

Iron levels over 5 PPM, or when manganese or other conditions such low pH, high levels of sulfur odor or iron bacteria or tannins, please note that additional treatment such as chlorine, peroxide, or aeration may be needed.

Manganese removal: when manganese is present, we recommend a chlorine feed. A chlorine feed with a contact/retention tank allowing 30 seconds of time after the chlorine has been injected, followed by the Pro-OX filter systems does a GREAT job on removing manganese. A carbon filter can be used after the Pro-OX system to remove any residual chlorine.

Hydrogen Sulfide Rotten Egg: if hydrogen sulfide is present and the water also contains iron, we recommend an Air-Charger Pro-OX system. If the hydrogen sulfide levels are over 5 PPM, we recommend a chlorine feed, and/or aeration prior to the Pro-OX system. Please contact us for more information if you need assistance.

"CF" refers to the amount of filter media blend in cubic feet. A 1.5 CF has 1.5 cubic feet of filter blend media (Pro-OX, Zeolite and filter gravel).

The Best Iron Filter On the Market! Eliminate Iron in Water. 100% Guaranteed.

Hear What Other Customers Say!

Extremely Easy Solo Installation"

Ren Worlock: Branford, FL

The Smell Has Immediately Disappeared, and the Hardness Seems Significantly Reduced, Thanks!"

Josh Hinson: Efland, NC

Now The Water Is The Cleanest I Have Ever Had!"

John Bird: Bonham, TX

Thanks For Helping Me Get What I Needed To Remove My Iron Problem"

Gordon Hals: Missoula, MT

We are very happy with the system and the water it provides. Very easy install."

Hugh Hanscom: Panama City, FL
  • Pro-OX Filters are the longest lasting and most powerful system for removing iron, rust and sediment from well water.
  • Contains a unique blend of high-purity manganese dioxide (Pro-OX) and naturally mined Zeolite for filtration down to 3 microns for maximum filtration and iron removal.
  • Pro-OX Filters include: pipe connectors; by-pass valve; filter gravel, Pro-OX Manganese Dioxide NSF Certified filter media; Zeolite Turbidity Filter media, filter gravel, filter tank; heavy-duty automatic backwash control valve.
  • System automatically backwashes based on days (time clock version) OR with the optional Backwash On-Demand Flow Sensor. Reliable heavy-duty NSF certified control valve is easier to program than other valves and features an optional built-in flow sensor that tracks water usage and backwashes iron filter based on gallons used, and/or by days of the week!
  • Backwash Flow Rate and Quantity: uses 50 - 100 gallons of backwash water 1 to 3 times a week depending on water use. Compared to other iron filters, the Pro-OX filter uses 50% less! Safe for septic tanks.
  • Pro-OX Manganese Dioxide is an NSF Certified natural high purity mineral that is used for removing iron, hydrogen sulfide, and manganese from water supplies. Removes up to 30 PPM iron and 15 PPM manganese. Higher levels possible with injecting air, chlorine or hydrogen peroxide ahead of filter. Iron bacteria, hydrogen sulfide and tannins can also be removed, contact us for more details.
  • Pro-OX media utilizes an oxidation-reduction reaction and filtration process similar to Greensand, but at a much higher level of performance. It works much better than other solid manganese dioxide iron-filter media due to its higher purity and porosity.
  • Pro-OX Manganese Dioxide contains greater than 80% manganese dioxide in an extremely unique cluster format for enhanced performance and maximized capacity.
  • Pro-OX Manganese Dioxide generally works better than Greensand or Birm, due to its high purity, superior oxidation/filtration ability. Unlike coated iron filter media such as Greensand or Birm or MTM, Pro-OX lasts for many years and doesn't have a coating to wear off or deteriorate like other iron filter media.
  • Note that in some waters aeration, hydrogen peroxide injection or chlorination is used before the iron filter to increase removal rates of iron, manganese and hydrogen sulfide.
  • Filter tank is NSF certified one piece seamless polyester construction for long life.
  • Max pressure recommended is 100 psi.
  • Maximum water temperature recommended 100F.
  • Rugged heavy-duty automatic backwash control valve features fully adjustable backwash and rinse cycles saving water and allowing maximized performance.
  • Time-tested hydraulically balanced piston seal and spacers provide years of trouble-free service.
  • Non-corrosive high-tech material construction.

Sizing Chart  
# Bathrooms
Pipe Size
Backwash Flow Rate Required
1.0 CF
1 to 2
3/4", 1" or 1-1/4"
7 Gallons per minute
1.5 CF
1 to 3
3/4", 1" or 1-1/4"
10 Gallons per minute
2.0 CF
2 to 4
3/4", 1" or 1-1/4"
12 Gallons per minute
2.5 CF
2 to 4
3/4", 1" or 1-1/4"
15 Gallons per minute

Pro-OX 7000 1.0 Cubic Foot: 10" Diameter x 51-3/8" Height
Pro-OX 7000 1.5 Cubic Foot: 10" Diameter x 61-3/8" Height
Pro-OX 7000 2.0 Cubic Foot: 12" Diameter x 59-3/8" Height
Pro-OX 7000 2.5 Cubic Foot: 13" Diameter x 61-3/8" Height
Fleck 7000 iron filter stainless steel connectors

Sand or grit? Protect your iron filter with this amazing pre-filter screen. No cartridges to change. A simple flush & screen is cleaned.

Easy to install! Connect iron filter to piping after your pressure tank using bypass (included at no extra charge) to enjoy iron-free water. See our selection of stainless steel flex lines.
iron filter 7000 diagram

Install a Salt-Saver High Flow Fleck 7000 Water Softener after your Pro-OX Plus iron filter for clean soft water throughout the house. Water softeners use much less salt and last much longer with lower maintenance when an iron filter is installed prior to the water softener.

iron filter and softener diagram
220v models available.

Q. What is the warranty for the Pro-OX Plus Iron Filters?

A. The filter tanks have a 10 year warranty. If there is a leak or any problems, which is rare, simply contact us and we will send a replacement tank no charge. We have been in business now since 1989 and problems with these systems are very rare, but we are here should you have any problem. The control valve has a 5 year warranty. We also offer a 6 month guarantee. If you are not happy for any reason within 6 months, just contact us and we will arrange for a refund of your money. Read more about our warranty.

Q. How do these Pro-OX iron filters work?

A. As the water flows through the filter tank containing Pro-OX filter media, a reaction occurs where the dissolved ferrous iron compounds form an insoluble ferric hydroxide. In plain English, as water containing iron flows through the media, the Pro-OX causes the iron (and manganese and hydrogen sulfide) to form rust, or solid iron, manganese and sulfide particles. After these rust particles get trapped in the filter media, the iron filter backwash control automatically performs a quick 8 minute backwash which rinses out the media every 1 or 2 nights. This restores the iron filter media to a clean state, ready to remove more iron and manganese. No filter cartridges are required and the filter media itself lasts for 10 years or more.

Q. What is the difference between Pro-OX, Birm and Greensand iron filter filters?

A. All of these filters use a manganese-dioxide filter media. Manganese-Dioxide is a very powerful oxidizing media which is a very effective way to filter iron and manganese from water.

The difference is that Birm and Greensand are coated with a thin coating manganese oxide. The coating eventually wears off. Pro-OX™, MangOX™, Filox™, & Pyrolox™ are different brand names for this naturally high-purity mined solid manganese dioxide mineral media. There is no coating to wear off and the media lasts much longer. Since it is a solid media, it is heavier and needs a stronger backwash flow to properly wash the iron and sediment out during the backwash and rinse cycles.

Q. What is the difference between Pro-OX™, Pyrolox™, Filox™, and MangOx™ iron filter filters?

A. These are all different brand names for solid manganese dioxide iron filter media. Our preferred media is Pro-OX, which is a little higher purity and in our experience, has a slightly faster reaction time than other brands. They all can be used interchangeably, but Pro-OX is perhaps a little higher quality. They all work well when used properly.

Q. Why do these iron filters need to backwash?

A. A periodic backwash flushes out the trapped iron and manganese that the iron filter removes, restoring the flow rate and pressure and keeping the Pro-OX media clean.

Q. What is the difference between "greensand iron filters" and Pro-OX iron filters?

A. The difference between Greensand iron filters and Pro-OX filters is the type of media used. Pro-OX filters use Pro-OX (similar to Filox and Pyrolox meda). Greensand is a lighter media, created by coating silica with a manganese oxide coating. It needs to be regenerated with potassium permanganate, or use with chlorinated water, where chlorine bleach is fed in upstream of the filter. Pro-OX is actually pure manganese oxide, it is not a coating. It is much heavier, requires a much higher backwash flow rate. Pro-OX can work in some applications where the iron levels are less than 5.0 ppm and there is no sulfur odor present and last for years with just simple backwashing. In these applications, no chlorine feed is required. However for many waters with hydrogen suflide present, or higher levels of iron, and/or manganese, a chlorine feed is recommended ahead of the Pro-OX filter.

Q. How often do these iron filters need to backwash?

A. Once or twice a week is recommended to keep the Pro-OX media in good condition. It is not harmed by frequent backwashing, unlike other media such as Birm.. The backwash lasts for about 8 minutes and then it rinses for 4 to 6 minutes. The backwash control is fully automatic and is typically set to backwash in the middle of the night. The frequency of the backwash will depend on how much iron and manganese is present, and how much water is used.

Q. Can I order the Pro-OX filter so it backwashes based on flow and not days of the week?

A. Yes you can. The Fleck 7000 model can be ordered with an optional flow sensor, when you check out you are able to check this option ($69 additional). This not only allows the iron filter to backwash based on gallons used, but it allows you to see the flow rate in gallons per minute of the water used in the house.

Q. Do these systems come in different sizes?

A. Yes. The size of the filter system is directly proportional to the flow rate of the water, in gallons per minute. The higher the flow rate, the larger the system required. See our table for the flow rates for Pro-OX iron filters.

Q. Do these filters have any special conditions to work properly?

A. Yes. The minimum backwash flow rate is necessary to be able to properly backwash and restore the Pro-OX media. The water should have a pH of 6.0 to 9.0. For water containing over 5.0 ppm of iron, or water containing hydrogen sulfide gas ('rotten-egg' odor) chlorine (or ozone or air) injection is recommended 10 to 30 seconds upstream of the filter. Pro-OX media works best if the water is pre-chlorinated, but it can be used without chlorination if the iron is less than 5.0 ppm and it is set to backwash as recommended.

Q. My water is hard also, I am thinking of using a water softener with an iron filter. Is that a good approach to consider?

A. Absolutely. Many people use a Pro-OX iron filter first in line, followed by a good quality water softener. The Pro-OX filter will remove iron, and the softener will remove the hardness.

Q. My water has a very bad smell of sulfur ("rotten-eggs"), is this a problem?

A. We recommend a chlorinator and/or an air-compressor-tank be installed prior to the Pro-OX filter to enhance the odor-removing capabilities of the Pro-OX filter. If hydrogen sulfide (the rotten-egg odor you are smelling) is present, the media will only remove very low levels without a chlorine feed ahead of the Pro-OX filter.

Q. My water has both sulfur smell and iron bacteria, will this work for me?

A. For water with odor and/or iron bacteria, the media works better and lasts years longer if you install a simple chlorine feed pump ahead of the iron filter. In some wells, if odor is present, there may also be iron bacteria and/or sulfur bacteria present. The Pro-OX iron filter will not kill this bacteria, so the bacteria can still cause odors after the filter, in the household plumbing, particularly if the water sits for a period of time. What happens is, the Pro-OX filter will remove it, but if there is any residual iron in the pipes, any pipes made of iron, the odor can come back after the pipes have sat unused for a day or two.

Q. I don't want to use chlorine or any chemicals of any kind. My water has sulfur odor, a LOT of iron, and manganese as well. What system should I use?

A. The best approach is to use the Maxi-Vent air-compressor air injection option with the Pro-OX filter. This is not only non-chemical, it is also virtually maintenance free and requires no regular or routine maintenance.

Q. My water has a very slight sulfur smell, can the Pro-OX Plus Iron filter remove this?

A. Yes. The system is available with an optional chlorine solution tank and you can add 1 or 2 cups of bleach, once or twice a month to clean and restore the media, when low levels of sulfur odor are present. No chlorine enters the household water, it is just used to clean and restore the filter media.

Q. My water has a weak-tea color, or is brown in color. The color does not settle out very much in a glass, even after I let it sit for a day or two. Will Pro-OX work for this type of problem?

A. Probably not, you may need to use the Pro-OX filter and add a Tannin filter after the Pro-OX filter for color removal.

Q. Are these systems big electrical power users?

A. No. The control valve uses only about 15 watts of energy to run the timer and backwash valve.

Q. What maintenance is required?

A. Under the right conditions there is littleor no maintenance. This is the great advantage of the Pro-OX filters. Pro-OX can last for over 10 years with little maintenance. In some cases depending on how hard the water is, the control valve backwash piston needs to be replaced every 3 to 5 years, but this is also easy to do by anyone. No special tools are required. The systems uses no salt or chemicals and there are no filter cartridges to replace.

Q. Is there a pressure loss through the system?

A. When properly sized, the system produces a very low pressure drop at service flow rates, usually around 5 psi.

Q. Can I route the backwash water to my septic tank?

A. Yes. The backwash water is non toxic and can be routed to the septic tank with no problem. It can also be routed to landscaping, although the backwash is usually very dark and orange, and will stain surfaces.

Q. How frequently do I have to replace the filter media?

A. The filter media will last for 5 - 15 years depending on usage and conditions. It is easily replaced.

Q. How much does it cost to change the Pro-OX media?

A. It costs around $300 to change the Pro-OX media for a typical 1.5 cubic foot size filter.

Q. Can I get assistance in choosing an iron filter system for my application?

A. Yes! You should first have your water tested, and then contact our technical staff for help on selecting the best iron filter system for your application. Also see our Custom Water System Design Questionnaire which makes it easy to help you select a system.