Laguna Clear-Flo 4000 Pump and filter Kit with 36 Watts UV – 4000 Gallons – PT1744

Original price was: $784.99.Current price is: $667.24.

Model Name – Laguna Clear-Flo 4000 Kit with UVC
Model Number – PT-1744
MAX Pond Size Low Load of fish in shade – 4000 Gal
MAX Pond Size High Load of Fish in Direct Sunlight – 2000 Gal
Pumps Included – Laguna Next Generation Max-Flo 2400 Pump
Filter Included – Laguna Pressure-Flo 4000 Pond Filter
UVC – 36 Watts
Biological Media – 4800g of Bio-Lava Rock
Inlet/ Outlets – 3/4″ – 1″ – 1 1/4″
Warranty – 3 Years
Shipping – FREE

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Laguna Pressure Flow: The new and improved Laguna Pressure-Flo pressurized pond filter eliminates green water and kills algae. The Laguna Pressure Flo provides mechanical filtration coupled with a powerful UVC sterilizer to produce a clear, clean and healthy pond environment for your pond. Simple to install and easy to maintain and clean, Laguna Pressure Flo filters are the heart that will keep your pond beautiful all season long.

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 sterilization 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 filters are designed to work in tandem with a solids handling pump, such as the Laguna Max-Flo 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.

Dirt-free water then passes along an integrated UV-C lamp, where it is exposed to ultraviolet rays that inhibit the growth of algae. Finally, water returns to the pond thoroughly cleansed. This patented system is the only one of its kind. Backwash cleaning can easily and comfortably be completed in a few minutes without opening the lid. This feature ensures that the filter performs at optimal levels for many days and prolongs the time between full maintenance sessions. An easy-to-view cleaning indicator signals when itfts time to perform backwash cleaning.
Laguna Max-Flo Pumps: Significant technological and design innovations improve pump performance with greater energy efficiency. The reliable Max-Flo Waterfall and Filter Pond Pumps operate on less wattage than the prior models without compromising flow rate. Max-Flo are fitted with Smart Pump Technology. This internal, self-regulating system tracks power consumption, hydraulics and impeller direction. In other words, these smart pumps use only the required amount of power for operation!
These high performance pond pumps are ideal for filtration systems, waterfalls, and watercourses. Durable inpre-filterin pump cage minimizes pump damage and clogging by selectively screening larger debris particles. Pumps feature convenient carrying handle, keyhole slots for optional fixed mounting and pivot pin fastener for quick and easy access to pump. Includes inClick-fitin coupler for convenient plumbing compatible with other Laguna series pond systems. 3-year warranty.
Max-Flo Waterfall and Filter Pond Pumps are able to process pond water moderately loaded with suspended solids (1/4in to 3/8in depending on the pump model). Because of this ability, these pond pumps are ideal for use with filtration systems and for creating waterfalls and watercourses. Suspended solids are transported to suitable external filter systems (including pressurized filters) that trap any debris that could potentially pollute pond water, effectively filtering the pond.

How to Test Pressure-flo UVC Power Supply

Additional information


Filtration Type

Filters Max Pond Size Range

Filter UV Option

With UV

Pond Product Type

Pond Filtration



Filter Max Pond Size

Parts and Accessories