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BioGuard SoftSwim Filter Cleaner | Pool Filters

SKU: 22859BIO
$21.99

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Description

BioGuard SoftSwim Filter Cleaner is formulated specifically for the biguanide chemistry of the SoftSwim program — and on a SoftSwim pool, filter cleaning isn't optional maintenance. It's the single most important routine task there is.

Biguanide sanitizer works by binding to contaminants and holding them in suspension so the filter can capture them. That's a genuine advantage of the chemistry, and it's the reason SoftSwim pools look as clear as they do. But it means the filter carries an unusually heavy load. Everything the sanitizer captures ends up in the media, where it accumulates as a soft, sticky residue that ordinary rinsing and backwashing simply don't remove.

The result is predictable and it's the number one complaint on biguanide programs: a filter that reads high pressure, delivers reduced flow, and won't recover after cleaning, alongside water that turns cloudy for no obvious reason. Owners blame the sanitizer. Usually the sanitizer is working exactly as designed and the filter has stopped keeping up.

This product cuts through that residue. It removes the dirt, oils, and deposits that clog filter media, restoring circulation and water clarity and letting the filter operate at peak performance. It works in any filter type — sand, DE, or cartridge — with a specific procedure for each.

It's also formulated to be biguanide-compatible, which matters more than it sounds. Filter cleaners built for chlorine pools aren't necessarily safe to introduce into a SoftSwim system, and the whole premise of a biguanide program is that every product in it belongs there.

Pro Tip: On a SoftSwim pool, clean the filter before you chase cloudy water with chemistry. Biguanide loads filter media far faster than chlorine does, so a fouled filter is by far the most common cause of clarity problems on this program — and no amount of sanitizer, clarifier, or oxidizer fixes a filter that can't move water. Check your pressure gauge first: if it's climbing above your clean baseline, or if backwashing no longer brings it down, the filter is the problem. Clean it properly and the water usually clears on its own within a day.

Brand

BioGuard®

What's in the Box
  • 1 x BioGuard SoftSwim Filter Cleaner, 1 quart (32 fl oz) bottle
  • Full manufacturer label with filter-specific directions and safety information

Note on quantity: a sand or DE backwash treatment uses the entire quart in one application. A small cartridge or DE element soak also uses one quart; large filter elements require two quarts. Check your element size before ordering.

Key Features

Formulated Specifically for SoftSwim

Built to remove the particles and residue unique to biguanide chemistry, and to work within the SoftSwim program rather than against it.

Cleans Filter Media for More Effective Filtration

Cuts the dirt, oils, and deposits that clog media and restrict flow, restoring the filter's actual capture ability rather than just rinsing the surface.

Improves Circulation and Water Clarity

A filter that can move water properly is a filter that keeps water clear. Restoring flow addresses the most common cause of cloudiness on a biguanide pool.

Works With Any Filter Type

Sand, DE, and cartridge systems are all covered, with a defined procedure for each.

Visual Confirmation During Application

On backwashable filters, a slight pink color in the sight glass tells you the product has reached the media — so you know the treatment is actually in place rather than guessing.

Extends Filter Media Life

Residue allowed to build season after season eventually makes a cartridge or DE element unrecoverable. Regular cleaning postpones a replacement that costs many times more than the cleaner.

Part of the SoftSwim Program

Each SoftSwim product is formulated to work specifically with biguanide chemistry, and the filter cleaner is the maintenance piece that keeps the rest of the program performing.

How It Works

Understanding why biguanide pools need a dedicated filter cleaner starts with how the sanitizer works.

Biguanide — polyhexamethylene biguanide — is a polymer with a positive charge distributed along its length. It kills bacteria by binding to their negatively charged cell membranes and disrupting them. That same charge attraction causes it to bind to other suspended material as well: body oils, cosmetics, fine debris, and organic waste. The polymer gathers all of it and holds it in suspension where the filter can capture it.

That's a real advantage for water clarity, and it's a large part of why SoftSwim pools look the way they do. But it shifts the workload. In a chlorine pool, oxidation destroys much of the organic material outright — it leaves the water as gas. In a biguanide pool, nothing gets oxidized away. Everything the sanitizer captures is still physically present, and all of it ends up in the filter media.

What accumulates there is a soft, sticky residue rather than loose dirt. Rinsing and backwashing move water past it without lifting it, the same way a garden hose doesn't remove oil from a cartridge. Over time the residue fills the pore structure, restricts flow, and blinds the media surface. Pressure climbs, flow drops, and the filter stops capturing what it's supposed to.

SoftSwim Filter Cleaner dissolves and releases that residue so it can be flushed out — through backwashing on sand and most DE filters, or through rinsing on cartridges and non-backwashable elements.

The two procedures differ in delivery, not chemistry. On a backwashable filter, the product is introduced through the lint pot so it reaches the media directly, then left to soak for 12 to 24 hours before being backwashed out. On cartridges and non-backwashable DE elements, the media comes out of the tank and soaks in a dilute solution for the same 12 to 24 hours. Long contact time is what does the work in both cases.

Pro Tip: Plan on cleaning the filter more often than a chlorine pool owner would — this is a known characteristic of biguanide programs, not a sign anything is wrong. Because the sanitizer captures material instead of oxidizing it away, the filter takes on a workload a chlorine pool's filter never sees. Watch the pressure gauge rather than the calendar: note your clean starting pressure, and treat a rise of 8 to 10 psi as the signal. Owners who wait until the water goes cloudy are already well past the point where a routine cleaning would have handled it, and residue that sits long enough eventually stops coming out at all.

Directions for Use

Quantity Reference

  • Sand and most DE filters: 1 quart, undiluted, into the lint pot
  • Small filter elements: 1 quart in 5 gallons of water
  • Large filter elements: 2 quarts in 10 gallons of water
  • Soak time, all types: 12–24 hours

Sand and Most DE Filters

  1. Backwash the filter thoroughly.
  2. Turn the pump off.
  3. For most effective results, remove the lid from the lint pot and pour 1 quart of this product into the pot. If that isn't possible, pour the product into the skimmer closest to the filter.
  4. With the filter in the backwash position, turn the pump on for 5 to 10 seconds, or until a slight pink color is seen in the sight glass or filter discharge.
  5. Turn the pump off, and turn the valve to the closed position if available.
  6. Let the filter cleaner soak for 12 to 24 hours before backwashing.
  7. Backwash the filter for at least 2 minutes, or until the sight glass or discharge water is clear of color, dirt, and debris.
  8. Rinse and return to normal operation.

Non-Backwashable DE and Cartridge Filters

  1. Turn the pump off.
  2. Remove the elements from the filter and rinse off debris with a high-pressure hose.
  3. Immerse the elements completely and soak 12 to 24 hours in a clean plastic bucket containing 1 quart of this product in 5 gallons of water for small filter elements, or 2 quarts in 10 gallons of water for large filter elements.
  4. Clean and rinse thoroughly with water using a high-pressure hose.
  5. Replace the elements and resume normal operation.
  6. For best performance, allow the DE filter septum or cartridge element to completely dry before operation.

When to Clean

  • When filter pressure rises 8 to 10 psi above your clean baseline
  • When backwashing no longer brings pressure back down
  • When water turns cloudy despite correct sanitizer levels
  • When flow from the returns is visibly weaker than normal
  • At opening and again at closing, as routine program maintenance
  • As a step in a metal stain removal protocol

Storage and Handling

  • Store in a cool, dry, well-ventilated area, out of direct sunlight and protected from freezing
  • Keep the container tightly closed and clearly labeled
  • Store separately from sanitizers, acids, and oxidizers
  • Keep out of reach of children and pets
  • Use a clean plastic soaking container dedicated to this product
  • Read and follow all label precautions, first aid, and disposal directions before use

Pro Tip: Let cartridge elements dry completely before you put them back — the label calls for it and it makes a real difference. Biguanide residue releases far more readily from dry media than from media that stayed damp, so a fully dried element starts its next cycle genuinely clean and stays cleanable longer. That's much easier with a spare cartridge in rotation: swap the clean one in, soak and dry the dirty one on your own schedule, and the pool never goes down waiting on a filter. On a biguanide program, where cleanings are more frequent by design, a second element pays for itself quickly.

Specifications
  • Brand: BioGuard
  • Product Type: Filter cleaner for biguanide pools
  • Form: Liquid
  • Volume: 1 quart (32 fl oz)
  • Manufacturer Part Number: 22859BIO
  • Removes: Dirt, oils, and deposits that clog filter media
  • Filter Compatibility: Sand, DE, and cartridge — all filter types
  • Sand and DE Application: 1 quart undiluted into the lint pot
  • Small Element Soak: 1 quart in 5 gallons of water
  • Large Element Soak: 2 quarts in 10 gallons of water
  • Soak Time: 12–24 hours
  • Backwash Duration: Minimum 2 minutes, or until discharge runs clear
  • Application Indicator: Slight pink color in the sight glass confirms the product reached the media
  • Drying: Allow DE septum or cartridge elements to dry completely before returning to service
  • Program: BioGuard SoftSwim biguanide system
  • Companion Products: SoftSwim A algaecide, SoftSwim B sanitizer, SoftSwim C clarifier
  • Removal Method: Backwash to waste, or rinse away from the pool — product must not return to the pool
  • Not A Substitute For: Sanitizer, clarifier, or filter replacement
  • Shipping Classification: DOT-regulated — ground shipping only
Compatibility

Filter Types

  • Sand filters — treated in place through the lint pot, then backwashed out
  • Most DE filters — same in-place backwash procedure
  • Non-backwashable DE filters — elements removed and soaked
  • Cartridge filters — elements removed and soaked

Water Care Program

  • SoftSwim biguanide pools — this is the intended and specific application

Each SoftSwim product is formulated to work with the biguanide chemistry of the program. If your pool runs chlorine or bromine, use a filter cleaner made for that chemistry instead.

Where It Fits in the SoftSwim Program

  • SoftSwim A — algaecide, carrying the algae-control load
  • SoftSwim B — the biguanide sanitizer
  • SoftSwim C — clarifier, removing body oils and organic contaminants
  • SoftSwim Filter Cleaner — this product, keeping the filter capable of removing everything the others gather up

Also Used in the Metal Stain Removal Protocol

SoftSwim Filter Cleaner is the biguanide-program substitute for a standard filter cleaner in BioGuard's metal stain removal sequence. After a stain remover releases deposited metal and a sequestrant holds it in suspension, the filter cleaner removes metal trapped in the media so it isn't released back into the pool afterward.

What It Does Not Do

  • Not a sanitizer, clarifier, or balancer. It cleans filter media only.
  • Not a water treatment. The product must be flushed out, never left to circulate into the pool.
  • Not a fix for a failed filter. Channeled sand, torn grids, or a worn-out cartridge need replacement.

Important Handling Cautions

  • Never mix with other chemicals in the soaking bucket or anywhere else. Use a clean plastic container dedicated to this purpose.
  • Do not allow the product to return to the pool. Backwash to waste, and rinse soaked elements away from the pool.
  • Follow your filter manufacturer's guidance on specialty or coated media before soaking.

Most products purchased from our online shop within the last 30 days are eligible for return. Please review our return policy to see the list of items that cannot be returned.

Some major items that are non-returnable:

  • Gift cards
  • Electronics
  • Pumps / Motors
  • Hot Tubs
  • Closeouts
  • Fireplaces
  • Electric Fireplaces
  • Massage Chairs
  • See return policy below for full list of non-returnables.

BioGuard® Brand FAQs

What is the BioGuard 3-Step Care System?

It's the brand's core program for traditional chlorine pools, and it reduces routine care to three jobs.Step 1, sanitize— SilkGuard Complete® tabs or sticks maintain a continuous chlorine residual that kills bacteria and controls algae between applications.Step 2, shock— Smart Shock® is applied weekly to oxidize the organic waste bathers leave behind, break apart chloramines, and restore clarity.Step 3, prevent— Algae Complete® stops algae before it establishes rather than fighting it after it blooms. The system works in pools of any size and surface type that circulate 10 to 24 hours per day.

What's the difference between BioGuard and SpaGuard?

They're sister brands from the same water-care company.BioGuard is the swimming pool line. SpaGuard is the spa and hot tub line.The split isn't marketing — pool dosing is calculated for tens of thousands of gallons at ambient temperature, while spa dosing is calculated for a few hundred gallons at 100°F. Pool packaging makes accurate spa measurement nearly impossible, and a pool-sized dose in a hot tub is a serious overdose. Match the product line to the vessel.

Which BioGuard program is right for my pool?

Equipment usually decides it. Pools running a standard chlorinator, feeder, or skimmer application belong on the3-Step Care System. Pools with a salt chlorine generator should be on thesalt pool programs— Mineral Springs® or SaltScapes® — which are formulated around the specific scale, balance, and cell-care demands of a generator. Owners who want no chlorine or bromine in the water at all use BioGuard'snon-chlorine biguanide program, which is a fully separate chemistry with its own sanitizer, oxidizer, and algaecide.

Can I mix BioGuard products with chemicals from other brands?

Basic balancers are chemically generic and generally interchangeable — alkalinity increaser is sodium bicarbonate no matter whose label is on the bucket. The real risk sits withsanitizer programs and specialty additives. Never introduce chlorine or bromine into a biguanide pool; the two chemistries destroy each other and produce cloudy water, gummy filter fouling, and a collapsed sanitizer residual. Also avoid stacking algaecides and clarifiers from different brands, since overlapping actives can cause foaming or staining. And regardless of brand, never combine two products in the same bucket, scoop, or feeder — always add them separately with circulation running between.

What is SilkGuard Technology?

SilkGuard® is a conditioning technology built into BioGuard's chlorinating tabs and sticks. It softens the feel of the water against skin and helps protect pool surfaces and equipment from scale formation, so the sanitizer is doing two jobs at once. SilkGuard Complete® products also carrySunShield® Technology, which shields free chlorine from ultraviolet breakdown. UV loss is the largest single drain on chlorine in an outdoor pool during summer, so protecting the residual directly reduces how much sanitizer you consume over a season.

Do BioGuard products work with salt chlorine generators?

Yes. A salt pool is still a chlorine pool — the generator simply produces the chlorine on site instead of you adding it from a bucket. Salt pools still need balancing, weekly oxidation, algae prevention, and scale protection, and they have one extra demand a standard pool doesn't: the generator cell itself accumulates scale and needs periodic cleaning. BioGuard's salt-specific programs are built around exactly those requirements.Do not skip testing on a salt pool— the automation controls chlorine production, not water balance.

About BioGuard®

BioGuard is a professional swimming pool care line built on a simple premise: pool chemicals work better as a program than as a shelf of unrelated purchases. Most water problems homeowners fight through the summer aren't caused by a bad product. They're caused by good products working against each other, applied out of sequence, in water whose balance was never corrected in the first place. BioGuard's entire approach is organized around fixing that — matched products, a defined order of operations, and a diagnostic process behind the recommendation.

The brand sits under the KIK Consumer Products umbrella alongside its spa counterpart, SpaGuard, and it covers the full range of pool water care: sanitizers, shocks, algaecides, balancers, water enhancers, surface cleaners and problem solvers, salt pool products, and off-season closing chemistry.

Three Programs, One Philosophy

  • Traditional Chlorine — the 3-Step Care System — Sanitize, shock, prevent. SilkGuard Complete® tabs and sticks handle daily sanitation, Smart Shock® handles weekly oxidation and clarity, and Algae Complete® handles algae prevention. Suitable for pools of any size and surface type running 10 to 24 hours of circulation per day.
  • Salt Pools — Purpose-built chemistry for pools with a chlorine generator, including the Mineral Springs® and SaltScapes® programs. Salt pools still generate chlorine, and they still need balancing, scale protection, and cell care — these products are formulated for that specific equipment set.
  • Non-Chlorine Pools — A complete biguanide-based program for owners who want no chlorine and no bromine in the water at all, with its own dedicated sanitizer, oxidizer, and algaecide.

Formulation Technologies

Two proprietary technologies show up across the chlorine line and explain a lot of the brand's reputation. SilkGuard® Technology conditions the water so it feels noticeably softer against skin while also helping protect pool surfaces and equipment from scale. SunShield® Technology protects free chlorine from ultraviolet breakdown, which is the single largest source of chlorine loss in an outdoor pool during summer — sanitizer that survives the afternoon is sanitizer you don't have to replace.

Diagnosis, Not Guesswork

BioGuard is sold through trained specialty dealers rather than mass-market channels, and the brand backs that network with the ALEX® water analysis system. ALEX reads a full water sample — sanitizer, pH, total alkalinity, calcium hardness, cyanuric acid, metals, and more — and returns a sequenced correction plan rather than a generic product suggestion. That distinction matters more than it sounds. Cloudy water has at least six common causes, and the fix for a filtration problem is nothing like the fix for a high-pH problem or a phosphate problem. Testing tells you which one you actually have.