1. Laguna Pressure-Flo 1400 UVC Filter
Product Feature
High performance water filtering system that keeps pond water clear and healthyq
Can be installed in or above ground; 16-foot long power cordq
Includes 11-watt UV lamp, filter foam and Biospheres biomediaq
Clogging indicator tells you when cleaning is requiredq
Water flow of 660 gallons per hour when high load of fish in sunlight; Water flow of 1320 gallons per hour when lowq
load of fish in shade
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Average Customer Rating
4.6 out of 5
Product Description
Laguna Pressure-Flo Filters are high performance water filtering systems that keep pond water clean and healthy. These
all-in-one filters provide mechanical, biological* and UV sterilization and are designed to work in tandem with a solids
handling pumps such as Laguna’s Max-Flo. This great inline filter unit can be added to most pond installations by simply
cutting a waterline from the pond pump to an existing water feature, like waterfalls or streams. The Click-Fit connecters
help make installation quick and easy.

2. The Laguna Pressure-Flo Filters also feature a revolutionary Backwash-Cleaning System that easily cleans the entire
surface of the foam filters without opening the filter. This patent-pending system is one of a kind. Backwash cleaning
can be done easily and comfortably in a few minutes without opening the lid. This feature ensures that the filters
perform at optimal levels for many days and prolongs the time between full maintenance sessions. An easy-view
cleaning indicator signals when it’s time to perform backwash cleaning.
The Laguna Pressure-Flo Filters are for use in freshwater aquariums only.
*Pressure-Flo 700 does NOT have a biological filtration chamber.
Four Models of Laguna Pressure-Flo
Universal Click-Fit fast coupling for ¾-inch, 1-inch, and 1 ¼-inch hosing.
Intended UseThe Laguna Pressure-Flo filter is a sealed pressure filter with an integrated UV-C sterilizer designed to
provide mechanical and biological filtration in outdoor fresh water ornamental ponds with a temperature from 39.2° to
95° Fahrenheit, with or without fish. The purpose of mechanical filtration is to trap and accumulate debris and waste
material coming from the pond. The purpose of biological filtration is to convert toxic by-products of fish metabolism
and other organic waste into much less harmful substances. The purpose of UV-C filtration is to inhibit single-celled
algae growth. All ponds will benefit from
the addition of a filtration system. A good filtration system, such as the Laguna Pressure Flo ensures that the water
quality of the pond will remain clear of impurities which can accumulate and create a cloudy or toxic environment for
pond plants and fish. The Laguna Pressure Flo will provide your fish with a clean and clear environment to live a healthy
life in.How Pressure-Flo Filters WorkPressure-Flo filters are designed to provide three important water filtration
operations that are essential for keeping pond water clear and healthy: mechanical and biological filtration, and UVC
sterilization. The filters are designed to work in tandem with a solids handling pump. For best results, use a Laguna
Max-Flo circulating pump. With the filter connected to the outlet of a pump, water enters the unit through the water
inlet. It is then forced to pass through the mechanical filtration stage, consisting of foam filters that intercept and trap
dirt and debris. Next, water reaches the biological filtration* chamber where it comes into contact with beneficial

3. bacteria. Finally, dirt-free water passes along the UV-C lamp unit, where it is exposed to ultraviolet rays that inhibit
algae growth and green water. Water then returns to the pond through the outlet.
Backwash-Cleaning System
During operation, coarse debris is captured at the surface of the foam filters. As a result, sooner or later depending on
pond conditions, the external surface of the foam filters will clog and hinder proper filtration, because of reduced water
flow. The limited water flow through the foam filters reduces the effectiveness of both the biological and UV-C filtration.
This condition can easily be detected thanks to the cleaning indicator on top of the filter unit.
Pressure-Flo filters feature a unique Backwash-Cleaning System that completely
cleans the entire surface of the mechanical foam filters without opening the filter or shutting off the pond’s pump. The
Backwash-Cleaning is performed by two foam filter scrapers, which are operated by using the plungers located on top of
the filter unit’s lid. While the pond pump is running, simply turn the backwash valve to the backwash position and begin
pulling the plungers one at a time up and down until the water being discharged is clean. After cleaning the filter will
perform at optimal levels for many days. The Backwash-Cleaning System prolongs the time between filter breakdown
maintenance sessions and in most cases only end of season breakdown cleaning will be necessary.
Pond Tip:
When backwashing or performing maintenance, use the backwash water in your garden - it's an excellent natural
fertilizer! Unlike other pressurized filters, water travels through mechanical filtration (where large particles are filtered
out) before entering the UV chamber, making the UV sterilization process much more efficient.
Cleaning Indicator
This unit features a cleaning indicator, which lets you know when the filter needs backwashing or cleaning. The red
indicator height is approximately proportional to the filter clogging level. When the red indicator is low, the filter is clean,
when the red indicator is at the top of its stroke, the filter needs cleaning.
The cleaning indicator may be affected by many variables, such as waterfall height and pump performance. Its
operating characteristics have been calibrated according to specific application conditions. Different application
conditions may lead to different results.
Breakdown of Filters

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