---
product_id: 42812591
title: "PF4000 36W Pressure Flo Filter"
brand: "laguna"
price: "€ 1569.56"
currency: EUR
in_stock: true
reviews_count: 13
category: "Laguna"
url: https://www.desertcart.fi/products/42812591-pf4000-36w-pressure-flo-filter
store_origin: FI
region: Finland
---

# 36W energy-efficient UV bulb 5 durable foam filter pads 4800g Bio-Lava rock for bio-filtration PF4000 36W Pressure Flo Filter

**Brand:** laguna
**Price:** € 1569.56
**Availability:** ✅ In Stock

## Summary

> 💧 Clear water, zero hassle — your pond’s new power player!

## Quick Answers

- **What is this?** PF4000 36W Pressure Flo Filter by laguna
- **How much does it cost?** € 1569.56 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/42812591-pf4000-36w-pressure-flo-filter)

## Best For

- laguna enthusiasts

## Why This Product

- Trusted laguna brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Last:** Premium European design with 10X stronger filter foams
- • **Powerful UV Defense:** New four-prong 36W UV bulbs crush green water fast
- • **Triple-Action Clarity:** Mechanical, biological & UV filtration unite for pristine pond water
- • **Effortless Maintenance:** Ergonomic grips & patented Backwash system simplify cleaning
- • **Optimized for Large Ponds:** Handles up to 4000 gallons with Laguna Max-Flo synergy

## Overview

The Laguna PF4000 36W Pressure Flo Filter is a high-performance pond filtration system designed for ponds up to 4000 gallons. It features a robust 3-step filtration process combining mechanical foam pads, biological Bio-Lava rock media, and a powerful 36-watt UV clarifier to eliminate green water and debris. Engineered with ergonomic handles and a patented Backwash Cleaning System, it offers easy maintenance and long-lasting durability. Perfectly paired with the Laguna Max-Flo pump, it delivers crystal-clear water with minimal effort.

## Description

The Laguna Pressure-Flo pond filter line has been re-engineered for improved performance and ease of use. The new Laguna Pressure Flo filters include a variety of improvements to simplify the maintenance process and provide more powerful filtration. Starting with the filter handles and diverter valve, each has been re-designed and strengthened. The cleaning handles now feature an ergonomically designed grip with re-enforced brush connections. The diverter valve has been re-shaped and enlarged to accommodate an improved cleaning indicator system and makes the patented Backwash Cleaning System easier to use. Yearly UV bulb maintenance has been simplified by improvements to UVC-Head; the screws used to attach the head to the filter unit are permanently connected to the UVC head. No more misplacing or losing screws during maintenance.Along with physical improvements to the filter body, the new filters also include increased filtration capabilities. The mechanical filter pads are now 10X stronger than the current pad foams to better maintain their rigid shape and performance. The UV clarification functionality has been increased with larger more powerful UV Bulbs. Biological filtration has been improved with the conversion to Bio-Lava rock filter media. The Bio-Lava rock provides increased surface areas which promotes the growth of healthy bacteria resulting in cleaner healthier water (Biological filtration not included in Pressure Flo 1000 model number PT1725).The Pressure-Flo 4000 is designed to work in tandem with a solids handling pump, such as the Laguna Max-Flo 2400 Waterfall and filter pump. With the filter connected to the pump, water enters the unit through a water inlet. It then passes through the mechanical filtration stage, consisting of highly durable foam filters that intercept and trap dirt and debris. High load of fish in direct sunlight (For Ponds Up To) 2000 U.S. GPHLow load of fish in shade (For Ponds Up To) 4000 U.S. GPH, Unit Size (Diameter x Height) 14.3 inch x 25.2 inch H,Canister Height 19.7 inchCanister Volume 10.6 U.S. gallon , Power Cord Length 16 feet

Review: Excellent Filter - Bought this to replace another filter that just wasn't working out. The pond was always terribly dirty and green for years using other filters. And now for the first time ever the pond is actually clear.
Review: Awesome! - I was skeptical about buying this filter for our koi pond but knew i needed something. All I can say is WOW.. what a difference - even over night! I clean it out at least once a month (it has 5 sponge filters and 'lava-like' rocks for the bottom. I've had it for about 2 months now, and it's still doing an amazing job! Easy to install, clears the water, design is easy to open & clean.

## Features

- Features: 3 Step Filtration System: Mechanical, biological and integrated UV filtration work in unison to provide clean and clear pond water
- New Energy efficient UV bulbs. New four prong bulbs are simple to install and provide powerful UV clarification to prevent and eliminate green water
- Premium European Construction and Patented Backwash Cleaning System
- Combine with a Laguna Max-Flo pump for the ultimate combination in filtration and performance
- Pressure-Flo 4000 UVC is for ponds up to 4000 gallons and comes complete with a 36-watt UV lamp, 5 filter foams and 4800 g of Bio-Lava Rock

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00T3CPEPW |
| ASIN  | B00T3CPEPW |
| Age Range Description | All Life Stages |
| Best Sellers Rank | #85,410 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #55 in Pond Filtration Equipment |
| Brand Name | Laguna |
| Color | Black |
| Customer Reviews | 4.4 4.4 out of 5 stars (278) |
| Date First Available | February 2, 2015 |
| Date First Available  | February 2, 2015 |
| Directions | Follow individual packaging instructions. |
| Included Components | All items listed in the description. |
| Is Discontinued By Manufacturer  | No |
| Item Dimensions LxWxH | 15.9 x 16.8 x 27 inches |
| Item Package Dimensions L x W x H | 30 x 20 x 19 inches |
| Item Weight | 32 Pounds |
| Item model number | PT1728 |
| Item model number  | PT1728 |
| Manufacturer | Rolf C. Hagen (USA) Corp. |
| Manufacturer  | Rolf C. Hagen (USA) Corp. |
| Model Name | Laguna PF4000 36W Pressure Flo Filter |
| Number of Items | 1 |
| Product Dimensions  | 15.9 x 16.8 x 27 inches; 32 Pounds |
| Size | PF4000 |
| Specific Uses for Product | Outdoor |
| Style | Above Ground |
| Target Audience Keyword | Fish |
| Warranty Description | Manufacturer Warranty |

## Images

![PF4000 36W Pressure Flo Filter - Image 1](https://m.media-amazon.com/images/I/71S8GYd6oKL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent Filter
*by D***Y on January 26, 2026*

Bought this to replace another filter that just wasn't working out. The pond was always terribly dirty and green for years using other filters. And now for the first time ever the pond is actually clear.

### ⭐⭐⭐⭐⭐ Awesome!
*by B***M on June 19, 2025*

I was skeptical about buying this filter for our koi pond but knew i needed something. All I can say is WOW.. what a difference - even over night! I clean it out at least once a month (it has 5 sponge filters and 'lava-like' rocks for the bottom. I've had it for about 2 months now, and it's still doing an amazing job! Easy to install, clears the water, design is easy to open & clean.

### ⭐⭐⭐⭐⭐ Easiest Maintenance
*by A***N on October 9, 2025*

LOVE this filter!! I’m using it on an indoor crocodilian pond (75 gallons). It’s smaller than a previous brand I had and wayyyyy better!! 0 leaks with this one. Maintenance is as easy as it could be! Just make sure you have a bucket/bowl under the outlet before removing the cap to backwash. But the quick connect adapters are wonderful. LOVE it so much. Water is crystal clear. I’m wanting to get a second one for another setup I have. Only downside was how long it took to arrive. Took like 1-2 months, but it has popped up on Prime now, so should be quicker. Regardless, worth the wait.

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**Shop now:** [https://www.desertcart.fi/products/42812591-pf4000-36w-pressure-flo-filter](https://www.desertcart.fi/products/42812591-pf4000-36w-pressure-flo-filter)

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-03-07*