1. Laguna Pressure-Flo 700 UVC Filter
Price :
Check Price
Average Customer Rating
4.6 out of 5
Product Feature
q High performance water filtering system that
keeps pond water clear and healthy
q Can be Installed in or above ground; 16-foot long
power cord
q Includes 11-watt UV lamp and foam media
q Clogging indicator tells you when cleaning is
required
q Water flow of 333 gallons per hour when high load
of fish in sunlight; Water flow of 660 gallons per
hour when low load of fish in shade
q Read more
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 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.

3. 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

4. Read more
You May Also LikeLaguna Max-Flo 600 Waterfall & Filter Pump Tetra Pond Tubing, Corrugated, 1 1/4 Inch x 20
Feet Laguna Pressure-Flo Replacement Foam Kit for Pressure-Flo 1400 UVC Filter - 4-Pack Laguna Pressure-Flo
UVC Lamp for Laguna Pressure-Flo Filter 700 and 1400 Laguna Pressure-Flo Foam Kit for Pressure-Flo 700 UVC
Filter - 3-Pack