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Resin Types used in Water Conditioning Resin Replacement Resin in palm of your hand

( When, Why, and How )

When or Why to replace your softening resins.

First let me say that is has been my experience that the resins in your water softener will usually out last the control valve. Examination of resin tanks over 20 years old found the resins to still be capable of the ion exchange ( which is the process by which your water is softened ). Some depletion of the amount of resin occurred in some of the systems over 20 years old. And modern day resin has improved slightly, but replacement is not needed as often as some would lead you to believe.

* How much resins should be in the tank?

Tanks 44" and taller normally are only 55% - 60% full when new.
Some shorter tanks ( 40" and shorter ) may be as much as 80% full ( Note - the valve head must have an upper distributor screen or "basket" installed to use this higher percentage of resins ).

* When should you replace your resins?

1. The number one reason to replace your resins is because they have been damaged by years of exposure to chlorinated "city" water. After about 10 years ( can be much sooner, or a bit later ) the resins "swell" and then they break down. They become so fragmented the "fines" collecting at the bottom distributor start to restrict the water pressure through the resin tank. This is generally how you "know" you need new resins. On some systems the fragments ( "Fines" ) will start coming into the house and clogging faucet screens.
If resin fragments have been getting into your house, then you will also need to replace the Bottom Distributor ( use our PN MD1236 listed below ).

Your Resins look like this ( color many vary ) >

2. When the resin bed has become contaminated by a noticeable and usually visible amount of algae growth ( This problem is common in tanks installed outside ).

3. When the resin tank has a large amount of fine sand in it. This sometimes happens on well water. It is always recommended to have a sediment prefilter installed in the water line before your water softener. This fine sand in the resin bed will cause you to have very poor water pressure. The only way to solve the problem is to dump ( or suck ) out all the resins and sand. Replacing with new resins is a whole lot easier than trying to sift the sand out of your old resin.

4. When a resin tank has been sitting unused for months or years, and a strong odor is detected from the resins. You can try cleaning with a weak chlorine solution, but odds are you will need to dump the resins, bleach out the tank ( with a strong chlorine solution ) and start with fresh new resins.

5. Resins "fouled" by Iron and Organics can usually be cleaned by adding a heavy dose of resin cleaner ( such as ResUp, Iron Out, Citric Acid, or Bleach ). Of course replacing with new works every time.

How To Replace Your Resins

1. Turn off water, unplug control valve from electric outlet, disconnect control valve from water lines, drain line, and brine line.
2. Unscrew control valve ( may require two people ).
3. Remove control valve and distributor tube ( the two normally can be separated at the control valve ).
4. Now the fun part. Depending on your situation ( size and location of your tank ), you need to either dump the water and resins out OR use suction to remove them.
** When it's not possible to lay the tank down, and dump, a shop vacuum is the next best way to remove the resins from the tank.
The resins are a non-toxic plastic and can be throw away or spread out in your lawn or flower bed. If you live in an area that has some "law" about disposal, please don't break the law. I am currently unaware of any restrictions, but now a days the local governments are getting "creative" in passing laws to "protect" the public.
5. You can clean the inside of the tank with chlorine ( bleach ) if you feel it needs it. If you need to scrub the inside of the tank, use a clean toilet bowl brush with piece of pipe to extend the handle.
And if you are going to be replacing your Bottom Distributor and center pipe, this would be the time to do it ( when the tank is empty ).
6. The next step is to pour in the new resins. A funnel is needed. A second person to help the resins "flow" into the tank is always nice to have, but one person can do it by themselves ( slowly ). If your resin tank's diameter is over 12", it is recommended that you pour a 4-6 inch layer of fine gravel ( 1/8" x 1/4" ) into the tank before the resins. On tanks 12" or less in diameter, the gravel under bedding is usually an unneeded option. If gravel under bedding is used, you must have the distributor tube in the tank before you start filling with gravel. Be sure you cover the top opening of your distributor tube to prevent any gravel or resins from getting inside. A plastic sandwich bag and rubber band works well.
NOTE: We do not recommend gravel for residential water softeners with tank diameter's under 13 inches.
Why Not Gravel?


7. Now do steps 3,2,1 in reverse.
8. Once reassembled you should backwash your new resins for 10 minutes using your control valve ( All control valves have some way to manually advance the valve to backwash ). You can allow the valve to run a complete regeneration cycle, but it is not needed. The resins come fully charged.
9. With the control valve in the normal "service" position, run the water in the home for a few minutes to clear the lines of any "trapped" air.
10. - You're Done -

How Much Resins To Use

Tank Size Amount of Resins Gravel Underbedding
8" x 35" 0.64 cu. ft. optional 10 lbs.
8" x 44" 0.75 cu. ft. " "
9" x 35" 0.75 cu. ft. optional 13 lbs.
9" x 48" 1.00 cu. ft. " "
10" x 35" 1.00 cu. ft. optional 16 lbs.
10" x 40" 1.00 cu .ft. " "
10" x 44" 1.25 cu. ft. " "
10" x 54" 1.50 cu. ft. " "
12" x 52" 2.00 cu. ft. optional 20 lbs.
13" x 54" 2 - 2.50 cu. ft. recommend 35 lbs.
Other sizes - Email tank dimensions
Tank Diameter - How To Measure

Water Softening Resins -
< Resins For Sale Page >

We only sell commercial grade resins


We USE:
8% Cross Link 32,000 grain per cu.ft. High Capacity Water Softening Resins

We only sell premium grade, high capacity, gelular, sulfonated, polystyrene cation resin supplied in the sodium form as moist, tough, uniform, spherical beads.

Typical Resin Specification
Equivalent to:
8% Cross Linked Gel Cation Sodium Form
Thermax T-42; Dow HCR-S; Rohm & Haas IR-120; Sybron C-249, C-267; Purolite C-100;
Resintech CG8; IWT C-211

"White" Resins ( for Tannin or Color Removal )

Recommend one pound per inch of your resin tanks diameter.
8 - 10 lbs. is typical

A special layer added to regular resins to remove color in well water caused by tannic acid ( a yellow to brown tint ).

Not Sure What You Need?
Please Ask, We Can Help.
For other MEDIA ( Carbon, Greensand, Birm, Calcite, etc ),
see: Other MEDIA replacement GUIDE


High Capacity Cation Softening Resins Funnel 2 1/2" Funnel 4" x 10"
Recommended High Capacity Replacement Resins for All Water Softeners.
Price is per One Cu. Ft.
You MUST select quantity desired.
Funnel 2 1/2" fits standard tanks.
Makes loading resins, carbon, and other media much easier.
Funnel 4" x 10"
Commercial Size Tanks not Residential, for loading Media.
Purolite C-100-E Cation Exchange Resin C-100E USA Tannin Macroporous Anion Resin A2950 - White Resin Cleaner - Softener Mate Resin Cleaner
Purolite C-100E, specially made in USA ( thus the higher cost ) is a High Capacity Replacement Resins for All Water Softeners.
Price is per One Cu. Ft. ( 28.32 liters )
You MUST select quantity desired, and then ADD to CART.
Tannin Macroporous Anion Resin A2950 - White Resin
Added to regular softening resins to remove color from Tannic Acid in your well water supply.
8 - 13 lbs. of this "white" resins is normally required.
Resin Cleaner, Citric Acid and Anionic Surfactants.
Add one Softener Mate 4 ounce package with each 40 - 50 lbs. of salt.
Cleans and Restores Your Softener
Cleaner - Citric Acid 1.5 pounds Cleaner - Citric Acid 4 pounds - Pro Ban T Cleaner - Rust Out Resin Cleaner
Resin Cleaner, Citric Acid in crystalized form, 1.5 pound container
Add 4 - 8 ounces with each 40 - 80 lbs. of salt or to Automatic Feeder ( commonly sold with Sear Kenmore units ).
Cleans and Restores Your Softener
Resin Cleaner, Citric Acid in crystalized form, 4 pound container
Add 4 - 8 ounces with each 40 - 80 lbs. of salt.
Cleans and Restores Your Softener
Resin Cleaner, Sodium Hydrosulfite and Sodium Bisulfite.
Add one Rust Out 4 ounce package with each 40 - 50 lbs. of salt.
Cleans and Restores Your Softener
Cleaner - Pro Rust Out Resin Cleaner 5 pounds Cleaner - Pro Rust Out Resin Cleaner 1.5 pounds Distributor -Bottom 1.05 O.D. piping pn D1236
Pro Rust Out Resin Cleaner, 5 pound container, of Sodium Hydrosulfite and Sodium Bisulfite.
Add one Rust Out 4 ounce with each 40 - 50 lbs. of salt.
Cleans and Restores Your Softener
Pro Rust Out Resin Cleaner, 1.5 pound container, of Sodium Hydrosulfite and Sodium Bisulfite.
Add one Rust Out 4 ounce with each 40 - 50 lbs. of salt.
Cleans and Restores Your Softener
1.05 inch O.D. Bottom Distributor .010" - .013" slots
Used to make Distributor Tube with a piece of 3/4" PVC Pipe.
Res-Up Feeder Distributor - 13/16 Bottom x  .010 - .013
Res-Up Feeder
Your Price: $13.95
This Feeder ( 30CC - 1OZ feed rate ) holds one quart of ResUp ( amount normally used in one month ).
Made to be mounted inside Salt Tank.
Click on Instructions below to Enlarge for Viewing
Liquid Sanitizer Concentrate for sanitizing Water Softeners, RO Units, and Water Coolers.
Cleans and Restores Your System
13/16 Bottom Distributor .010 - .013 Basket used with 13/16" tubing unique to the water treatment industry.
All Autotrol 155 and early 255 models used this size.
Some Fleck also used this size.