🌊 Certikin Lacron 20″ LSR Side Mount Sand Filter with 0.75HP Aquaspeed Pump Combo – Complete Pool Filtration System

Effortless pool maintenance with professional-grade filtration for medium-sized pools

📋 Product Overview

The Certikin Lacron 20″ LSR Side Mount Sand Filter paired with the 0.75HP Aquaspeed Pump provides the perfect balance of performance and efficiency for medium-sized residential swimming pools. Building on over 30 years of proven British engineering, this combination offers exceptional filtration for pools up to 60,000 litres.

This complete pump and filter package sits perfectly between the compact 18″ model and the larger 24″ variant, making it ideal for pool owners who need more capacity than entry-level systems but don’t require the higher flow rates of larger installations. The 20″ filter’s 10 m³/h design flow rate paired with the energy-efficient 0.75HP Aquaspeed pump delivers crystal clear water whilst keeping running costs manageable.

The side-mounted multiport valve configuration allows servicing of the filter interior without disturbing connecting pipework, whilst the generous 230mm clear lid provides excellent visual display of water flow—particularly useful when monitoring backwash progress. Constructed from hard-wearing GRP (Glass Reinforced Polyester) with a hi-gloss non-corrosive finish, this combination is built to deliver years of reliable service. Fully compatible with salt chlorinated pools.

✨ Key Features

✅ Complete Pump & Filter Package – Includes Lacron LSR 20″ filter tank, side-mounted 6-way multiport valve, pressure gauge, filter media (100kg sand), and 0.75HP Aquaspeed pump

✅ Balanced Flow Capacity – Filter design flow rate of 10 m³/h optimally matched with 9 m³/h pump for efficient mid-range filtration

✅ Side Mount Valve Configuration – Allows servicing of filter interior without disturbing connecting pipework

✅ 230mm Clear View Service Lid – Large transparent lid on top provides easy access and visual display of water flow during operation and backwashing

✅ Pressure Tested to 4 Bar (60 PSI) – Manufactured and tested to exceed normal operating requirements for long-lasting reliability

✅ Hi-Gloss Non-Corrosive GRP Construction – Glass Reinforced Polyester tank and base components resist harsh pool chemicals and UV exposure

✅ Self-Priming 0.75HP Aquaspeed Pump – Energy-efficient motor starts reliably without manual priming, ideal for medium-sized pools

✅ Salt Chlorinated Pool Compatible – Both pump and filter designed for saltwater pool systems

✅ 316 Grade Stainless Steel Pump Shaft – Premium corrosion-resistant construction for extended service life

✅ Fishbone Lateral Design – 15% more efficient backwashing than standard star configuration, saving water and time

✅ Energy Efficient Operation – Lower power 0.75HP motor reduces electricity costs whilst maintaining excellent filtration

✅ Speed Style Connections – Quick installation with 2″ unions and 1.5″ reducers included

✅ Winter Drain Tap – Easy access drain for proper winterisation in UK climate

✅ CE Approved & TUV Certified – Meets European safety and quality standards

⚙️ Technical Specifications

Filter Specifications

Specification	Value
Filter Type	Sand (Side Mount – LSR Sureflow)
Tank Diameter	20″ (500mm)
Design Flow Rate	10 m³/h
Filter Area	0.20 m²
Media Capacity	100kg (Grade 16/30 silica sand)
Bed Depth	365mm
Valve Type	6-Way Multiport (Side Mounted) with Pressure Gauge
Service Lid	230mm (9″) Clear View on Top
Test Pressure	4 bar (60 PSI)
Maximum Operating Pressure	2.5 bar (36 PSI)
Inlet/Outlet Size	1.5″ (38mm) Female Threaded
Tank Material	GRP (Glass Reinforced Polyester)
Filter Warranty	5 Years Tank + 1 Year Components

Pump Specifications

Specification	Value
Pump Model	Certikin Aquaspeed AQUA071
Motor Power	0.75HP (0.56kW)
Flow Rate	9 m³/h @ 10m head
Phase	Single Phase 240V
Motor Speed	2850 RPM
Motor Rating	IP55 Totally Enclosed Fan Cooled
Insulation Class	Class F with Thermal Protection
Shaft Material	316 Grade Stainless Steel
Maximum Water Temperature	50°C
Connection Size	2″ Unions (with 1.5″ reducers)
Pump Body	Single-piece Fibreglass Filled
Salt Compatible	Yes
Pump Warranty	2 Years (1 Year on Seal & Capacitor)

📏 Pool Sizing Guide

Sizing Principle: The filter flow rate should turn over the entire pool volume in 6-8 hours for optimal filtration performance.

Formula:

Pool Volume (litres) = Flow Rate (m³/h) × Turnover Time (hours) × 1000

This Combination’s Capacity

📍 Filter Design Flow Rate: 10 m³/h

📍 Pump Flow Rate: 9 m³/h at 10m head

📍 Optimal Pool Size (6-hour turnover): Up to 54,000 litres

📍 Maximum Pool Size (8-hour turnover): Up to 60,000 litres

Pool Size Compatibility Table

Pool Type	Volume Range	Suitability
🏠 Medium above-ground	20,000 – 40,000 L	✅ Excellent – ample capacity
🏠 Large above-ground	40,000 – 54,000 L	✅ Excellent – ideal match
🏠 Small in-ground	30,000 – 45,000 L	✅ Excellent – well suited
🏠 Medium in-ground	45,000 – 60,000 L	✅ Good – within design range

💡 Tip: The 20″ filter offers 33% more filter area than the 18″ model (0.20 m² vs approximately 0.15 m²), providing better dirt-holding capacity and longer intervals between backwashes for medium-sized pools.

🔌 Installation Requirements

Plumbing Connections

Requirement	Specification
Inlet Connection	1.5″ (38mm) Female Threaded
Outlet Connection	1.5″ (38mm) Female Threaded
Pump Unions	2″ quick connect (with 1.5″ reducers)
Valve Position	Side Mount
Service Access	230mm clear lid on top of tank

Physical Installation

Requirement	Details
Base Surface	Solid, level concrete or paving required
Clearance Above	Minimum 300mm for lid access
Clearance Around	Minimum 500mm on valve side for operation
Plant Room	Frost-free location recommended for UK climate

Side Mount Advantage

The side-mounted multiport valve configuration allows servicing of the filter interior (media inspection, replacement) without needing to disturb the connecting pipework. The 230mm clear lid on top provides excellent visual display of water passing through the filter—particularly useful when backwashing to observe when the water runs clear.

Electrical Requirements

Requirement	Details
Power Supply	Single Phase 240V
Circuit Protection	Dedicated RCD protected circuit required
Installation	Must be installed by qualified electrician

⚠️ Important: This pump and filter combination is supplied pre-matched. The pump flow rate (9 m³/h) is optimally matched to the filter’s design flow rate (10 m³/h) for efficient filtration without overloading the filter.

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🔄 Maintenance Guide

Routine Maintenance Schedule

Task	Frequency	Details
Check pressure gauge	Weekly	Record baseline reading when clean
Backwash filter	Every 1-2 weeks	When pressure rises 0.5 bar above baseline
Rinse after backwash	After each backwash	Run for 30-60 seconds until water clears
Inspect pump basket	Weekly	Remove debris, check for damage
Check pump lid seal	Monthly	Replace if worn or cracked
Inspect filter media level	Annually	Top up if low (should be 2/3 full)
Full media replacement	Every 5-7 years	Or when water clarity declines

Pressure Gauge Guide

📊 Clean filter baseline: 0.8 – 1.0 bar (typical)

📊 Backwash required: When pressure rises 0.5 bar above baseline

📊 Maximum safe operating pressure: 2.5 bar

⚠️ Warning: If pressure exceeds 2.5 bar, stop pump immediately and investigate blockage.

Backwashing Procedure

1. Turn off pump
2. Set multiport valve to BACKWASH position
3. Turn on pump and run until sight glass shows clear water (typically 2-3 minutes)
4. Turn off pump
5. Set valve to RINSE position
6. Turn on pump for 30-60 seconds
7. Turn off pump
8. Return valve to FILTER position
9. Resume normal operation

💡 Note: The Lacron fishbone lateral design is 15% more efficient on backwashing than standard star configurations, saving water and reducing backwash time.

Winterisation (UK Climate)

• Drain all water from pump, filter tank, and pipework
• Remove and store drain plugs safely
• Set multiport valve to WINTER position (between settings) to relieve pressure on spider gasket
• Cover or store pump in frost-free location if possible
• Never leave water in the system during freezing conditions—ice damage is not covered by warranty

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🪨 Filter Media Information

Media Capacity: 100kg (4 × 25kg bags)

Compatible Media Types

Media Type	Filtration Rating	Lifespan	Benefits
Silica Sand (16/30 grade)	20-40 microns	5-7 years	Economical, proven performance
Glass Media	5-15 microns	10+ years	Finer filtration, longer life, eco-friendly
Zeolite (Lacronite/ZeoSand)	3-5 microns	5 years	Superior water clarity, ammonia removal

Media Loading for 20″ Filter

• Standard residential: 100kg Grade 16/30 silica sand
• No pea gravel required for residential use at this filter size

Signs Media Needs Replacing

• Poor water clarity despite correct chemical balance
• Short filter cycles between backwashes
• Channelling visible through clear lid
• Media visible in pool returns
• Filter more than 7 years old (sand) or 10 years (glass)

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💎 Filtration Performance

Metric	Value
Design Flow Rate	10 m³/h
Filter Area	0.20 m²
Filtration Rating (Sand)	20-40 microns
Filtration Rating (Glass)	5-15 microns

Micron Rating Guide

Rating	What It Catches
40+ microns	Visible debris, leaves, hair
20-40 microns	Sand, dirt, visible particles
10-20 microns	Fine particles, some algae
5-10 microns	Very fine particles, most algae spores
3-5 microns	Microscopic particles, bacteria

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🛠️ Multiport Valve Positions & Functions

Position	Function
FILTER	Normal filtration—water flows through media and returns to pool
BACKWASH	Reverse flow to clean media—dirty water exits via waste line
RINSE	Settles media after backwash—run for 30-60 seconds
WASTE	Bypasses filter—water drains directly to waste (for lowering water level)
RECIRCULATE	Bypasses filter—water returns to pool without filtration
CLOSED	Stops all water flow—use only when pump is off
WINTER	Between positions—relieves pressure on spider gasket for storage

⚠️ Important: Never turn multiport valve handle while pump is running—this can damage the spider gasket.

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🏡 Ideal Applications

Application	Pool Size	Suitability
🏠 Medium above-ground	20,000 – 40,000 L	✅ Excellent – ample capacity
🏠 Large above-ground	40,000 – 54,000 L	✅ Excellent – ideal match
🏠 Small in-ground	30,000 – 45,000 L	✅ Excellent – well suited
🏠 Medium in-ground	45,000 – 60,000 L	✅ Good – maximum range

Best Suited For:

• Medium-sized residential swimming pools requiring balanced performance and efficiency
• Pool owners upgrading from smaller 16″ or 18″ filter systems
• Installations where 18″ is too small but 24″ is more than needed
• Energy-conscious pool owners seeking lower running costs
• Pools requiring salt chlorination compatibility
• UK installations requiring winterisation capability
• Replacement of aging pump and filter systems on established medium pools

❓ Frequently Asked Questions

Q: What size pool will this filter and pump combination handle? A: This combination is suitable for pools up to 54,000 litres with optimal 6-hour turnover, or up to 60,000 litres with 8-hour turnover. The filter’s design flow rate is 10 m³/h.

Q: How does the 20″ compare to the 18″ and 24″ models? A: The 20″ sits between the 18″ (8.5 m³/h, 75kg sand, pools to ~51,000L) and 24″ (14.5 m³/h, 125kg sand, pools to ~87,000L). It’s ideal when the 18″ is slightly undersized but the 24″ offers more capacity than needed.

Q: How often do I need to backwash the filter? A: Backwash when the pressure gauge reads 0.5 bar above the clean baseline reading, typically every 1-2 weeks depending on pool usage and debris levels.

Q: What filter media should I use? A: The filter is compatible with silica sand (16/30 grade), glass media, or zeolite/Lacronite. Sand is economical and effective; glass media provides finer filtration and longer life. Media capacity is 100kg.

Q: Do I need pea gravel with this filter? A: No, the 20″ filter does not require a pea gravel base layer for residential use. Pea gravel is typically only recommended for 24″ and larger filters in commercial applications.

Q: How long does filter media last? A: Silica sand typically lasts 5-7 years, glass media 10+ years, and zeolite approximately 5 years. Replace when water clarity diminishes despite correct chemical balance.

Q: Is this combination suitable for saltwater pools? A: Yes, both the Lacron filter and Aquaspeed pump are fully compatible with salt chlorinated pool systems.

Q: Why choose a side mount filter over top mount? A: The side mount configuration allows you to service the filter interior and change media without disturbing the connecting pipework. The large clear lid on top also provides a visual display of water flow during operation.

Q: What warranty is included? A: The filter tank carries a 5-year warranty with 1-year warranty on components. The pump has a 2-year warranty with 1 year on mechanical seal and capacitor. Contact Parts4Tubs for full warranty terms.

Q: Is the 0.75HP pump powerful enough? A: Yes, the 0.75HP Aquaspeed delivers 9 m³/h at 10m head, which is optimally matched to the filter’s 10 m³/h design flow rate. This combination provides efficient filtration whilst keeping energy costs lower than higher-powered alternatives.

🏆 Why Choose the Lacron 20″ LSR & 0.75HP Aquaspeed Combination

✅ Perfect Mid-Range Solution – Ideal capacity for medium-sized pools where 18″ is too small and 24″ is overkill

✅ Britain’s Best-Selling Sand Filter Brand – Over 30 years of proven performance and reliability

✅ Energy Efficient – 0.75HP motor keeps running costs low whilst delivering excellent filtration

✅ Optimally Matched Components – Filter and pump flow rates precisely balanced for efficient operation

✅ Side Mount Convenience – Service filter interior and change media without disturbing pipework

✅ Clear View Lid – 230mm transparent lid allows visual inspection of water flow and backwashing progress

✅ Premium Build Quality – GRP filter tank and single-piece fibreglass pump body for exceptional durability

✅ Advanced Lateral Design – Fishbone configuration provides 15% more efficient backwashing

✅ Salt Chlorinator Compatible – Both components designed for modern saltwater pool systems

✅ Comprehensive Warranty – 5-year tank warranty plus full manufacturer backing on pump

🤝 Why Buy from Parts4Tubs

✅ UK-based company with local support

✅ Fast UK delivery

✅ Expert advice from pool specialists

✅ Competitive pricing

✅ Full warranty support

✅ Easy returns within 30 days

✅ Compatible filter media and spare parts available

💧 Summary

The Certikin Lacron 20″ LSR Side Mount Sand Filter with 0.75HP Aquaspeed Pump combination delivers the perfect balance of performance and efficiency for medium-sized residential pools up to 60,000 litres. This mid-range package bridges the gap between compact entry-level systems and larger high-capacity installations, making it ideal for pool owners who need more filtration capacity than the 18″ model but don’t require the higher flow rates of the 24″ variant. With Britain’s most trusted sand filter brand, energy-efficient 0.75HP pump, convenient side-mounted valve configuration, and comprehensive warranty coverage, this combination offers outstanding value for medium pool installations seeking reliable, cost-effective filtration season after season.

Order today and enjoy crystal clear pool water with energy-efficient operation.