700 LPH Solar Pond Filter for Small Fish Ponds – Battery Backup

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Overview

This solar pond filter pump is designed for small fish ponds up to 1000 litres, combining mechanical and biological filtration with an integrated low-energy pump. Operating directly from solar power, it supports effective pond circulation in suitable sunlight conditions, with an integrated battery backup included for more consistent operation.

  • Solar pond filter pump for small fish ponds
  • Dual mechanical & biological filtration
  • Integrated pump with 700 LPH flow
  • 25 W high-efficiency solar panel
  • Solar powered, no mains required
  • For ponds up to 1000 litres
  • Dry-run protection built in
  • Adjustable flow control
  • Integrated LiFePO4 battery backup
  • Supports fountains and circulation
  • Maximum head height: 1.9 m
  • Weather-resistant outdoor design
  • RoHS, REACH, CE & UKCA compliant
  • Complete kit with core components
Overview

This solar pond filter pump is designed for small fish ponds up to 1000 litres, combining mechanical and biological filtration with an integrated low-energy pump. Operating directly from solar power, it supports effective pond circulation in suitable sunlight conditions, with an integrated battery backup included for more consistent operation.

  • Solar pond filter pump for small fish ponds
  • Dual mechanical & biological filtration
  • Integrated pump with 700 LPH flow
  • 25 W high-efficiency solar panel
  • Solar powered, no mains required
  • For ponds up to 1000 litres
  • Dry-run protection built in
  • Adjustable flow control
  • Integrated LiFePO4 battery backup
  • Supports fountains and circulation
  • Maximum head height: 1.9 m
  • Weather-resistant outdoor design
  • RoHS, REACH, CE & UKCA compliant
  • Complete kit with core components

Solar Pond Filter Kit – 25W MPPT System

This solar pond filter pump system is designed for small fish ponds up to 1000 litres, combining mechanical and biological filtration with an integrated low-energy pump. Operating directly from solar power, it provides effective circulation and filtration in suitable sunlight conditions, with an integrated MPPT battery backup included for more consistent operation.

✓ Ponds up to 1000 L ✓ 700 LPH flow rate ✓ Integrated pump & filter ✓ MPPT battery backup included ✓ 25 W solar panel

As with all solar-powered systems, performance depends on sunlight availability. Best results are achieved in direct sunlight, with reduced output during prolonged overcast conditions or outside peak summer months.

Pond Suitability

Pond Size

Suitable for small fish ponds up to 1000 litres when correctly sized and maintained.

  • Small ponds: suitable
  • Medium ponds: suitable
  • Large ponds: not recommended

Sunlight Requirements

Designed for solar operation in direct sunlight. Output varies with season, weather, and panel placement.

Water Features

Supports pond circulation, fountains, and small cascades where head height requirements are met.

Fish Stock Guidance

Stock Level Suitability
No fish Well suited for maintaining water clarity
Light stock Suitable with routine maintenance
Medium stock Effective with regular cleaning
Heavy stock Not recommended

Solar Power & Filtration System

The system uses a 25 W solar panel to power a DC brushless pump, delivering steady circulation for filtration. Mechanical and biological filtration stages work together to remove debris and support a balanced pond environment.

Solar Panel

25 W polycrystalline panel designed for outdoor use and efficient energy capture in suitable sunlight.

Filter Media Options

Compatible with zeolite or gravel media to support biological filtration.

System Flexibility

Suitable for filtration, circulation, and decorative water features.

Integrated MPPT Battery Backup

This system includes an integrated MPPT battery backup. Energy collected during sunny periods is stored and used when light levels drop, helping maintain more consistent operation during variable conditions.

Exclusive Revolutionary MPPT Technology - Features and Benefits

PowerBee Ltd proudly introduces the world's first garden solar pumps with Maximum Power Point Tracking (MPPT) technology - a breakthrough previously only available in industrial solar systems. The battery for this pump includes our own patent pending MPPT system, which automatically optimizes solar energy conversion to deliver 30% more efficiency than conventional solar pumps, ensuring stronger performance in all weather conditions.

Illustration of MPPT solar technology

Exclusive MPPT optimisation for maximum efficiency

Advanced Solar Optimization > 30%

  • Maximum Power Point Tracking (MPPT) ensures peak efficiency in all weather conditions.
  • Up to 30% higher energy conversion compared to standard solar systems.
  • Optimized performance even during (in season) cloudier or lower-light periods.

Extended Performance and Reliability

  • Faster battery charging for uninterrupted operation.
  • Extended operating hours for pumps, aerators, and fountains.
  • Reliable functionality throughout the day and night.

Innovative Technology, Industry First

  • First to bring MPPT technology to garden and pond solar systems.
  • Designed for solar pumps, oxygenators, and fountains of all sizes.
  • Sets a new standard for efficiency and performance in the industry.

How the Filtration System Works

Mechanical Filtration

Foam filter stages capture solid debris, reducing waste build-up within the pond.

Biological Filtration

Filter media encourage beneficial bacteria that help break down waste products.

Performance Characteristics

When correctly installed, the system delivers its highest flow at low head heights, with reduced output as pumping height increases. Performance varies depending on sunlight and installation conditions.

Flow Rate by Pumping Height

Height Flow (Solar) Flow (Battery)
0 m 700 LPH 560 LPH
0.6 m 480 LPH 380 LPH
1.2 m 250 LPH 200 LPH
1.7 m 70 LPH 0 LPH
Max height 1.9 m 1.7 m

Performance figures are indicative and based on controlled testing. Results vary with sunlight, season, and installation.

Experience the Difference With powerbee Ltd

Proven Quality

  • Best Buy Award Winner (2021–2025)
  • 16+ years in solar water systems
  • RoHS, REACH, CE, UKCA compliant

UK Support

  • Technical help within 24 hours
  • Clear setup guidance included
  • Video help for common installs
  • support@powerbee.co.uk

Customer Assurance

  • 2-year warranty on pump products
  • 30-day money-back guarantee
  • Free 24-hour UK mainland delivery
  • 07786 948 899
✓ 2-year warranty (pump products) ✓ 30-day money-back guarantee ✓ Free 24-hour UK mainland delivery
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Technical Specifications

Specification Details
Filter Medium Choice of Zeolite (ammonia removal) or Gravel (mechanical filtration)
Filter Box Dimensions 30 × 21 × 26 cm (11.8" × 8.3" × 10.2")
Outlet Tubing Size Compatible 12mm flexible tubing (sold separately)
Mechanical Filtration 2× Foam Layers + 2× Fine Mesh Nets (included)
Accessibility Removable lid for easy media maintenance
Pump Type Sunspray SE 1000 Professional Series
Flow Rate 700 LPH @ 0m head (185 GPH)
Max Head Height 1.9m (6.2 ft)
Spray Height Up to 2.0m with fountain nozzles
Motor Protection Dry-run + Locked rotor + Overheat protection
Solar Panel 25W Grade A Polycrystalline with MPPT
Panel Dimensions 514 × 349 × 23mm (20.2" × 13.7" × 0.9")
Battery System 12.8V 6Ah LiFePO4 (Weatherproof enclosure)
Runtime 18h (sunny days) / 10h (battery only)
Cable Lengths 5m pump cable + 1.5m panel-to-battery
Pump Dimensions 105 × 68 × 55mm (4.1" × 2.7" × 2.2")
Float Option Included for deep pond placement
Pond Capacity Up to 1,000 litres (264 gal) stocked
Seasonal Use Spring-Summer optimal (Winter mains charger optional)
Certifications RoHS, REACH, CE, UKCA
Warranty 2 years pump/panel • 6 months battery*
Adjustable Flow Precision control valve included

*Battery warranty requires proper winter storage (fully charged, frost-free environment)

Need a different flow rate or head height?

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Installation Guide

Components Included

All essential parts are supplied for standard installation.

  • Solar panel and battery box
  • Integrated pump and filter box
  • Filter media and foam elements
  • 5 m pump-to-battery cable
  • Ground mounting stake

Location Planning

Correct placement is important for consistent solar performance.

  • Select an area with direct sunlight
  • Allow access for cleaning and checks
  • Avoid shaded or enclosed spaces
  • Plan panel angle toward the sun

Solar Panel Mounting

The solar panel can be ground-mounted or fixed to a suitable surface.

  • Insert the ground stake securely
  • Attach the panel to the mounting point
  • Angle panel for best sun exposure
  • Alternative mounting methods supported

Filter Box & Pump Setup

The pump and filtration media must be positioned correctly.

  • Place pump inside the filter chamber
  • Add gravel or zeolite media
  • Secure foam filtration layers
  • Position filter box within pond

Battery Box & Cable Connections

Correct cable routing ensures stable operation.

  • Position battery box above water level
  • Connect pump cable securely
  • Route cables to avoid tension
  • Connect battery box to solar panel

System Activation

The system operates automatically once powered.

  • Switch system on at battery box
  • Operates when sufficient sunlight is available
  • Battery stores energy from sunny periods
  • Monitor initial operation

Ongoing Maintenance

Routine checks help maintain filtration efficiency.

  • Clean filter media regularly
  • Check pump intake for debris
  • Inspect battery condition periodically
  • Adjust panel position seasonally

Safety & Usage Notes

Basic precautions support long-term reliability.

  • Secure mounts firmly
  • Keep solar panel unobstructed
  • Ensure steady water circulation
  • Follow supplied manufacturer guidance

How the Solar Pond Filter System Works

Solar Energy Collection

The solar panel converts sunlight into DC electricity to power the pump and filtration system during suitable daylight conditions.

  • Uses solar energy only
  • No mains electricity required
  • Best performance in direct sunlight
  • Zero ongoing running costs

Power Distribution

Electricity generated by the panel is supplied directly to the pump, with energy managed automatically depending on light conditions.

  • Solar-first operation
  • Automatic power management
  • Performance varies with sunlight
  • No manual control required

Mechanical Filtration

Water passes through foam filters that capture leaves, debris, and suspended particles before returning to the pond.

  • Removes visible debris
  • Helps maintain water clarity
  • Protects pump from blockages
  • Easy-to-clean filter media

Biological Filtration

Filter media provide surface area for beneficial bacteria, supporting natural breakdown of waste compounds.

  • Encourages beneficial bacteria
  • Supports pond ecosystem balance
  • Helps manage fish waste
  • Natural filtration process

Water Circulation

Continuous water movement helps distribute oxygen and reduces stagnant areas within the pond.

  • Improves water circulation
  • Supports oxygen exchange
  • Reduces stagnant zones
  • Promotes healthier pond conditions

Optional Battery Backup

When fitted, the battery stores excess energy generated during sunny periods and can supply power during reduced sunlight.

  • Stores energy from daylight
  • Supports extended operation
  • Performance depends on charge level
  • Weather-dependent behaviour

Seasonal Performance

Solar pond filter performance varies naturally throughout the year due to changes in daylight and sun angle.

  • Strongest performance in spring and summer
  • Reduced output during autumn and winter
  • Shorter run times in low-light months
  • Seasonal adjustment improves results

Automatic Operation

The system operates automatically, switching between available solar input and stored battery energy where applicable.

  • No manual switching required
  • Designed for outdoor use
  • Solar-first energy usage
  • Battery used when available
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