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Pro-OX Lite 5900-BT Iron Filters
Made in the USA. Built to last.
The 5900-BT is for homeowners who want a valve made in the USA. It's a Chandler Signature 3 valve with a built-in flow meter, and a free Bluetooth app (Legacy View) shows water use, flow and settings on your phone.
A bypass is included. Add AIR on 1.0 CF and up (not on the 13x30 short tank) when you also have sulfur odor or manganese.
What it treats
Our recommendations, based on your water test.
- Standard system: up to 5 ppm iron and 0.3 ppm manganese.
- With the AIR option (1.0 CF+): up to about 8 ppm iron and 0.5 ppm manganese. The valve keeps an air pocket at the top of the tank that oxidizes iron and removes sulfur odor.
- With a chlorinator (J-PRO-38): up to about 10 ppm iron and 1.0 ppm manganese, and iron bacteria.
- Higher than that? High iron needs careful design. We design a custom system from your water test.
We recommend pH 7.0 or higher.
Send in a water test or book a call, and we'll recommend the right setup for your water.
Pick your size
0.5 CF
6x35 tank
Standard system- Bathrooms
- 1
- Peak flow
- 4 GPM
- Continuous flow
- 2.0 GPM
- Backwash (well must supply)
- 3 GPM
0.75 CF
8x44 tank
Standard system- Bathrooms
- 1–2
- Peak flow
- 6 GPM
- Continuous flow
- 3.5 GPM
- Backwash (well must supply)
- 5 GPM
1.0 CF
9x48 tank
AIR option available- Bathrooms
- 2–3
- Peak flow
- 8 GPM
- Continuous flow
- 4.4 GPM
- Backwash (well must supply)
- 7 GPM
1.0 CF short
13x30 tank · short, for low ceilings
Standard system- Bathrooms
- 2–3
- Peak flow
- 8 GPM
- Continuous flow
- 4.4 GPM
- Backwash (well must supply)
- 12 GPM
1.5 CF
10x54 tank
AIR option available- Bathrooms
- 3–4
- Peak flow
- 10 GPM
- Continuous flow
- 5.5 GPM
- Backwash (well must supply)
- 7 GPM
2.0 CF
12x52 tank
AIR option available- Bathrooms
- 3–5
- Peak flow
- 14 GPM
- Continuous flow
- 7.9 GPM
- Backwash (well must supply)
- 10 GPM
Peak vs. continuous flow: Peak flow is what the filter handles in normal home use, where water runs in bursts (showers, laundry, faucets). Our bathroom ranges come from systems we've installed in real homes. Continuous flow is for long, steady draws, like filling a storage tank, irrigation, or running water for hours. If that's your use, size to the continuous flow, or call us with your water test.
Backwash Flow Rate: your well must supply at least this many GPM. Many wells make less than 10 GPM; size the filter to your well. Flow Rate Calculator
Short tank (13x30): for low ceilings; needs 12 GPM to backwash.
Why the 5900-BT
- Made in USA. American-made Chandler Signature 3 control valve.
- Bluetooth app. Check water use, flow and settings from your phone.
- Bypass included. Bypass valve with 1" connectors comes in the box.
- 5-year control valve warranty. Plus a lifetime warranty on 6"–13" filter tanks.
- AIR option. Choose AIR on 1.0 CF and up (+$150; not on 13x30 short tanks).
Add AIR for sulfur odor and manganese
We recommend the Air Charger add-on if you have manganese or sulfur odors (rotten egg smell) along with iron. The Air option allows the water to be aerated, which helps remove sulfur odor and gives you increased oxidation.
Choose AIR in the options on the product page of the size you pick. On the 5900-BT AIR, clean the injector screen and replace the piston seals once a year.
Considering hydrogen peroxide for sulfur odor? We recommend a contact tank after the peroxide injection, then a catalytic carbon filter ahead of the iron filter to remove leftover peroxide.
How Pro-OX Lite compares
In a standard 1.0 CF tank, Pro-OX Lite gets its full bed depth, doesn't change your pH, and needs no chemicals.
Figures from each media maker's own documents. These are the makers' published numbers, not our test results.
Sources: Vibrantz, Pyrolox Advantage Technical Manual and Technical Data Sheet (23/10/2023); Watch Water, Katalox Light product sheet and Katalyst Light Safety Data Sheet (v2.2, 15.01.2024); Inversand, GreensandPlus Technical Data Sheet (Rev. 5/25) and Safety Data Sheet. Hydrated lime: Watch Water Katalox Light composition (ZEOSORB, MnO2, hydrated lime) and Safety Data Sheet. 9x48 bed depth: 1.0 cu ft ÷ 0.44 sq ft = about 27 in.
What's included
In the box
- Pro-OX Lite iron filter media and bottom gravel
- Chandler 5900-BT Bluetooth control valve
- Bypass valve with 1" connectors
- NSF-certified filter tank
- Distributor tube and bottom basket
- 110V–230V power adapter
Warranty and guides
- Lifetime warranty on 6"–13" filter tanks; 5 years on 14" and larger
- 5-year warranty on the control valve
- 6-month money-back guarantee
- 5900-BT Pro-OX Lite Installation Guide (PDF)
Questions
For manganese or sulfur odor (rotten egg smell) along with iron. See "Add AIR for sulfur odor and manganese" above for how it works.
Air is available on the 5900-BT (1.0 CF and up, +$150; not on 13x30 short tanks).
The spindown filter removes sand or grit that may be in your well water. Keeping sand out protects the filter media and the control valve, whichever valve you choose.
Another advantage is that it can be used to sanitize your Pro-OX Lite iron filter with chlorine bleach if you have iron bacteria. By adding a cup of bleach once a year to the spindown filter, and turning the water back on, the Pro-OX Lite media can be cleaned and sanitized. It only takes a few minutes and no chlorine gets in the house, as the filter is then put into backwash after sanitizing.
Most of our customers do install themselves, however it is easy for any plumber or handyman to install. Ordering the optional flex lines makes it very easy to hook up to your piping.
The 5900-BT includes a bypass valve.
Very little. The valve backwashes on its own to flush out the iron the media has caught, and Pro-OX Lite needs no potassium permanganate or other chemicals. If your water has iron bacteria, sanitize the media with chlorine bleach once a year through the optional spindown filter (see the spindown question above).
If you add AIR: on the 5900-BT AIR, clean the injector screen and replace the piston seals once a year.
At the maximum flow rate, expect about a 15 psi pressure drop; at normal household use it's less.
Your well produces a maximum amount of gpm. Many wells are less than 10 gpm, and you size the filter to match your available flow rate.
If you have a submersible pump with a pressure tank and switch, use this link to find your available flow rate.
Flow Rate Calculator
All 5900-BT sizes
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