Mechanical filtration plays a crucial role in every successful reef aquarium. By removing waste particles before they break down into nitrate and phosphate, effective mechanical filtration helps improve water quality, increase clarity, and reduce maintenance throughout the system.
For years, filter socks were the standard solution, but many reef keepers grew frustrated with the constant cycle of removing, washing, and replacing them. The introduction of automatic filter rollers transformed reef filtration, and few products have had a bigger impact than the Red Sea ReefMat.
Designed to automate particulate waste removal, the ReefMat continuously advances fresh fleece as needed, keeping filtration performance consistent while dramatically reducing maintenance.
Whether you've just purchased a ReefMat or are considering upgrading your reef aquarium, this guide will explain how to set up, optimise, and maintain your Red Sea ReefMat for long-term success.
What Is the Red Sea ReefMat?
The Red Sea ReefMat is an intelligent automatic fleece filter system designed to replace traditional filter socks.
Instead of relying on reusable mechanical media, the ReefMat uses a roll of fine fleece material that continuously captures:
- Fish waste
- Uneaten food
- Detritus
- Organic debris
- Suspended particles
When the fleece becomes clogged, the ReefMat automatically advances fresh material.
This ensures filtration remains highly effective at all times.
Why Choose a ReefMat?
The ReefMat offers several advantages over conventional mechanical filtration.
Key Benefits
- Cleaner water
- Reduced maintenance
- Improved sump cleanliness
- Consistent filtration performance
- Lower nutrient accumulation
- Smart monitoring through ReefBeat
- Quiet operation
Many reef keepers consider it one of the most worthwhile upgrades available.
Choosing the Correct ReefMat Model
Before installation, ensure you've selected the right model.
ReefMat 250
Suitable for:
- Smaller reef aquariums
- Compact sump systems
ReefMat 500
Ideal for:
- Medium-sized reef tanks
- Most mixed reef systems
ReefMat 1200
Designed for:
- Large reef aquariums
- High-flow systems
- SPS-dominated reefs
Choosing the correct size ensures optimal performance and fleece efficiency.
Before Installation
Before setting up your ReefMat, gather everything you'll need.
Equipment Checklist
- ReefMat unit
- Fleece roll
- Power supply
- Plumbing fittings
- ReefBeat app
- Smartphone or tablet
- Clean towel
Preparation helps streamline the installation process.
Step 1: Measure Available Sump Space
The ReefMat requires sufficient room for:
- Installation
- Roll replacement
- Routine maintenance
Before placing the unit:
Check
- Width
- Height clearance
- Plumbing access
- Cable routing
Maintenance access is often overlooked but extremely important.
Step 2: Turn Off Aquarium Equipment
Before making plumbing changes:
Switch Off
- Return pump
- Protein skimmer
- Reactors
- UV steriliser
- Auto top-off systems
Allow water levels to stabilise before proceeding.
Step 3: Remove Existing Mechanical Filtration
Most aquariums currently use:
- Filter socks
- Filter cups
- Mechanical sponges
These are usually removed when installing a ReefMat.
The ReefMat becomes the primary mechanical filtration stage.
Step 4: Position the ReefMat
Place the ReefMat securely within the sump.
Ideal Placement
Immediately after the aquarium overflow.
Typical flow path:
Display Tank → Overflow → ReefMat → Skimmer Chamber → Return Pump
This arrangement removes waste before it can break down elsewhere.
Step 5: Connect the Plumbing
The ReefMat accepts water directly from the overflow system.
Common Connection Options
- Flexible hose
- PVC plumbing
- Metric fittings
- Adaptor kits
The ReefMat includes multiple connection options to simplify installation.
Important
Check all fittings carefully for:
- Leaks
- Secure connections
- Correct alignment
Step 6: Install the Fleece Roll
The fleece roll is the heart of the ReefMat.
Installation Process
- Insert the clean fleece roll.
- Route fleece through the filter chamber.
- Attach fleece to the collection roller.
- Ensure correct tension.
- Verify smooth movement.
Take your time during this stage.
Improper installation can cause advancement issues later.
Step 7: Connect the Electronics
The ReefMat includes:
- Motor assembly
- Water level sensor
- Controller
Connect all cables according to Red Sea's instructions.
Ensure
- Secure connections
- Dry cable routing
- Easy access for servicing
Proper cable management improves reliability.
Step 8: Connect to ReefBeat
One of the ReefMat's most powerful features is integration with Red Sea's ReefBeat ecosystem.
ReefBeat Features
- Roll usage tracking
- Notifications
- Maintenance reminders
- Performance monitoring
- Remote status updates
The app guides users through setup step by step.
Step 9: Test Operation
Before restarting the aquarium:
Verify
- Correct plumbing flow
- Proper sensor operation
- Smooth fleece movement
- No leaks
- Correct water levels
Testing prevents surprises after installation.
How the Automatic Advancement System Works
The ReefMat advances fleece automatically when required.
Process
- Fleece captures waste.
- Flow becomes restricted.
- Internal water level rises.
- Sensor detects the change.
- Motor advances fresh fleece.
This creates a self-regulating filtration system.
Understanding Fleece Consumption
One of the most common questions reef keepers ask is:
"How Long Will a Roll Last?"
The answer depends on:
- Aquarium size
- Bioload
- Feeding frequency
- Flow rate
- Mechanical waste levels
Typical Lifespan
Many reef keepers achieve:
- Several weeks
- Often multiple months
per fleece roll.
How to Replace a Fleece Roll
Replacing fleece is simple and usually takes only a few minutes.
Step 1
Turn off the ReefMat.
Step 2
Remove the used collection roll.
Step 3
Install the new fleece roll.
Step 4
Thread fleece correctly.
Step 5
Attach to the take-up spool.
Step 6
Restart the unit.
Always verify smooth operation afterwards.
Routine Maintenance
Although maintenance is dramatically reduced compared to filter socks, some upkeep remains important.
Weekly Checks
Inspect:
- Fleece movement
- Water level
- Sensor condition
- Plumbing connections
A quick inspection helps identify issues early.
Cleaning the Water Level Sensor
The sensor controls fleece advancement.
Over Time
Salt creep and deposits may accumulate.
Cleaning Procedure
- Remove deposits carefully
- Use RO water
- Avoid harsh chemicals
A clean sensor ensures reliable operation.
Cleaning the ReefMat Housing
Occasional cleaning helps maintain efficiency.
Areas to Inspect
- Splash guards
- Inlet chamber
- Fleece path
- Collection area
Removing debris prevents build-up over time.
Common ReefMat Problems and Solutions
Problem: Fleece Advances Too Frequently
Possible Causes
- Excessive flow
- High waste levels
- Dirty sensor
Solution
- Reduce flow if necessary
- Clean the sensor
- Review feeding practices
Problem: Fleece Doesn't Advance
Possible Causes
- Incorrect threading
- Motor issue
- Sensor contamination
Solution
Inspect:
- Roll installation
- Motor operation
- Sensor cleanliness
Problem: Water Bypasses the Fleece
Possible Causes
- Incorrect fleece routing
- Poor installation
Solution
Reinstall fleece carefully according to manufacturer instructions.
Problem: Excessive Roll Consumption
Common Causes
- Heavy feeding
- High bioload
- Elevated detritus levels
The ReefMat is often highlighting an underlying maintenance issue rather than causing one.
Optimising ReefMat Performance
To maximise fleece lifespan:
Feed Carefully
Avoid excessive waste.
Improve Flow Management
Ensure water enters evenly.
Maintain Good Husbandry
Reduce detritus accumulation throughout the system.
Clean Sensors Regularly
Accurate sensing improves efficiency.
Small adjustments often have a noticeable impact.
ReefMat and Protein Skimmers
Many reef keepers notice improved skimmer performance after installing a ReefMat.
Why?
The ReefMat removes larger particles before they begin decomposing.
Benefits may include:
- Cleaner skimmer necks
- Improved efficiency
- More stable nutrient control
The two systems complement each other extremely well.
ReefMat and Nutrient Control
The ReefMat can contribute to lower:
- Nitrate
- Phosphate
by physically removing waste before it breaks down.
However, it should be viewed as part of a complete nutrient management strategy alongside:
- Protein skimming
- Refugiums
- Water changes
- Good feeding practices
Is the ReefMat Worth It?
For many reef keepers, the answer is a resounding yes.
Reasons Hobbyists Upgrade
- No more filter sock washing
- Improved water clarity
- Cleaner sumps
- Better mechanical filtration
- Reduced maintenance time
The convenience alone is often enough to justify the investment.
Final Thoughts
The Red Sea ReefMat is one of the most effective filtration upgrades available for modern reef aquariums. By automatically removing particulate waste before it can break down, it helps improve water quality, reduce maintenance, and create a cleaner, healthier reef system.
With proper installation, regular sensor cleaning, and routine fleece replacement, the ReefMat can provide years of reliable performance while freeing you from one of the least enjoyable tasks in reef keeping—washing filter socks.
At Charterhouse Aquatics, we stock the full range of Red Sea ReefMat systems, replacement fleece rolls, ReefBeat-compatible equipment, reef filtration products, and marine aquarium essentials to help you keep your reef aquarium performing at its best.
