MyWaterClub Product Support

Inline Bone Char Fluoride Filter — 10″ × 2″

BC-QC
Final stage · Fluoride

This page covers where the filter goes, how to install and flush it, how to check fluoride, when to change it, and the parts that fit it.

MyWaterClub inline bone char fluoride filter BC-QC, bone char and coconut carbon, 10 x 2 inch
Is this your filter?

Check these against the filter in your hand. All four should match.

  • ✓An inline filter about 10″ long and 2″ across
  • ✓The label says Bone Char · fluoride · bone char + coconut carbon
  • ✓Quick-connect ports at both ends and a flow arrow on the label
  • ✓SKU / Reorder # BC-QC on the label, and a QR code that opens this page

Bone char or plain carbon? Check the label
  • BC — bone char (70% bone char, 30% coconut carbon) — for fluoride. This page.
  • PAC — carbon post filter, coconut carbon only — taste and odor polish. PAC-QC support page →
  • CAC — pre-carbon, coconut carbon before the RO membrane. CAC-QC support page →
  • Other inline filters (sediment, mineral, alkaline, DI) — see the full guide. Inline filter guide →

Specifications

Model / SKU BC-QC
Media 70% bone char · 30% coconut shell carbon
What it does Helps reduce fluoride. The coconut carbon also improves taste and odor (how much fluoride is reduced depends on your fluoride level, flow rate and contact time). It does not reduce dissolved solids (TDS) and is not a sediment filter.
Position Final stage — after the RO membrane, or after the carbon filter on a non-RO system
Size 10″ × 2″
Connection Quick connect · elbow adapters included for 1/4″ or 3/8″ OD tubing
Pressure / temperature Max 90 PSI · 36–100°F, cold water only
Typical life Depends on your fluoride level and use — test after the filter and replace when fluoride starts to rise
Brand MyWaterClub

Reorder this filter

This filter · BC-QC
Inline Bone Char Fluoride Filter

Choose 1/4″, 3/8″ or universal adapters when you order. The price per filter drops when you buy more.

Buy on MyWaterClub.com →

Where it goes

The bone char filter is the final stage. It works best on water that is already filtered, and slow flow gives it more contact time.

Your setup Order of stages
Countertop RO Faucet adapter → sediment (SED) → pre-carbon (CAC) → RO membrane → post filter (PAC) → bone char filter → faucet
Under-sink RO Pre-filters → RO membrane → storage tank → carbon post filter → bone char filter → RO faucet
Under-sink filter, no RO Sediment → carbon block → bone char filter → drinking-water faucet
Placement rules
  • Always after sediment and carbon. Chlorine and dirt use up bone char quickly.
  • Before an alkaline or mineral filter — if you also use one, put the bone char filter first. Bone char works better before the pH is raised.
  • Drinking-water line only. At full kitchen-faucet flow the contact time is too short for fluoride.
  • Hot water lines — not for hot water. Cold water only, 36–100°F.

Connections

Before you cut anything
  • Check your tubing size. It is either 1/4″ OD or 3/8″ OD, usually printed on the tubing. Use the matching elbow adapters from the box. Never force 1/4″ tubing into a 3/8″ port, or the reverse.
  • Water must flow the way the arrow on the label points — toward the faucet.
  • You need a tubing cutter (or a sharp utility knife), a towel and a small bucket.
  1. Push an elbow adapter that matches your tubing into each filter port until it stops, and tug to check it holds.
  2. Cut the tubing square. A cut off by about 15° or more will leak. The last inch should be round, smooth and free of scratches.
  3. Remove any blue C-clips from the adapters. A clip left in stops the tube from seating.
  4. Push the tube in until it stops, then pull gently to confirm it holds.
  5. Refit the blue C-clips on every quick-connect port.

To remove a tube later: turn off the water and release pressure, take off the C-clip, push the collar in toward the filter and pull the tube out while holding the collar.

Installing and flushing

First time? Watching a short video helps: search YouTube for “add inline filter to RO system”.

  1. Shut off the water supply (and the tank valve on an under-sink RO), then open the faucet to release pressure.
  2. Find the spot: after the carbon post filter, right before the faucet.
  3. Check the tubing size and fit the matching elbow adapters, then cut the tubing square over a towel.
  4. Connect the filter with the flow arrow pointing toward the faucet, and refit the C-clips.
  5. Secure the filter with a clip: a 2.5″ × 2″ clip onto the membrane housing, or a 2″ × 2″ clip onto another inline filter.
  6. Turn the water back on. Check for leaks now, after 10 minutes, and the next day.
  7. Flush for at least 10 minutes, until the water runs clear. A new bone char filter releases fine black dust at first — this is normal. On an under-sink RO, let the tank fill, then discard the first full tank.
  8. Write the install date on the label.

Checking fluoride

  • Know your starting level. Your city’s annual water quality report (Consumer Confidence Report) lists fluoride in mg/L, or test your tap water.
  • Test after the filter with a fluoride test kit or a lab test, a week after installing and then every 3 months.
  • On an RO system, the RO membrane already removes most fluoride. The bone char filter reduces what is left.
  • A TDS meter cannot measure fluoride. TDS readings do not show whether this filter is working.

When to change your filter

Filter When to replace Change sooner if…
Bone char filter When fluoride after the filter starts to rise
depends on your fluoride level and use		 Taste or odor returns, or flow drops

Higher fluoride in your water and more daily use mean a shorter life. Write your test results and dates on the label.

Parts that fit this filter

Part Notes
Carbon post filter (PAC-QC) Goes right before this filter on an RO system
1/4″ stem × 3/8″ quick-connect elbow, 2-pack Spare adapters for 3/8″ tubing
Blue C-clips for 1/4″, 10-pack Locks the tube in a 1/4″ port · clips for 3/8″
2.5″ × 2″ mounting clips, 2-pack Clips the filter onto an RO membrane housing · 2″ × 2″ clips
1/4″ OD tubing, white If you need extra length · 3/8″ tubing · tubing cutter

Common questions

Question or problem Answer
Black specks or gray water from a new filter Fine bone char and carbon dust. Flush for at least 10 minutes; a few specks in the first days are normal.
What is bone char made from? Bone char is made from animal (cattle) bone heated at high temperature. If you avoid animal products, this filter is not for you.
Do I need this if I have RO? The RO membrane already removes most fluoride. This filter is an extra final step for people who want to reduce the remainder.
TDS did not change Expected. This filter does not reduce dissolved solids, and a TDS meter does not measure fluoride.
Drip at a quick-connect port Tube not fully in, scratched or cut at an angle, or the C-clip was left in. Release, recut square, push it fully in and refit the clip.
Low flow at the faucet Filter installed backward, kinked tubing, or an old filter. Check the arrow and the tubing.

Need help?

Contact us
Send a photo of the filter label and your system, plus your fluoride results, and we’ll help

Get in touch →

Inline filter guide
Every inline filter type, connection and setup

Open the guide →

San Diego area service
In-person help and free basic water testing

Local service →

Warranty & returns
Coverage and how to start a return

View policy →

Call or text (858) 345-7345.

Scope note: This filter helps reduce fluoride and improves taste and odor. It is not certified to a specific fluoride reduction level, does not reduce dissolved solids, and is not designed to make unsafe water safe. Use it on municipally treated or otherwise microbiologically safe water.

Please note: Fluoride reduction and filter life depend on your fluoride level, flow rate, contact time and usage, so results vary from home to home. This product is not a substitute for testing your water.