- How to remove them.
Now that we know what biofilms are (learn about
let's talk about HOW to remove them and prevent their return.
Biofilms can be removed mechanically, chemically or
"naturally." Mechanical removal using vacuums, wall brushes, scrub
brushes, filter cleaners, etcetera, physically remove the biofilm from visible
Visible places would be the filter cartridge itself, filter
tank, vinyl liner, water line,
treads, skimmer baskets, etc. You can physically handle the object that needs to
be cleaned. This is one of the reasons why we as Pool Professionals are so
adamant about brushing the pool's surfaces on a regular, weekly basis.
Brushing breaks up and lifts the biofilm off from its cozy environs enabling the
chlorine to kill it and the filter to remove it. Be careful however to
regularly clean & chemically clean the filter to remove the accumulations of
"filtered" biofilms from the filter media - whether it be sand, DE or cartridge.
Aboveground pools with serious biofilm infestations should
consider just changing the filter hoses. Typically, most aboveground pools have
2 - 9 ft. or shorter hoses as compared to well over 100 ft. of buried inground
Keep in mind that biofilms are a direct contributor to
chlorine demand, causing the pool to use significantly more chlorine, bromine or
biguanides than if none were present. Remove the biofilm, remove an
important component to chlorine demand.
In hard to reach places like pool plumbing lines & inside heaters, biofilms need
to be removed Chemically. This is where so much biofilm (and about 99% of
the bacteria) accumulates and thrives. Biofilm is left alone. It has
all that it needs - a surface, moisture, and nutrients floating by. Keep in mind
that biofilm doesn't need sunlight - it's not an algae so sunlight is not one of
biofilm's needs. Biofilm does need "warm" water - 90 F or better for optimal
growth, but as long as it's not cold, the biofilm will survive and grow just
fine thank you.
Tried & true products such as natural enzymes (Natural
Pool Products Naturally Pure and
NaturCare Enzymatic Pool Clarifier) "eat up" much of the nutrients and other
waste that contribute to biofilm
thereby stunting it. But as biofilms become more resistant and more proliferate,
a new arsenal of products must be considered & used.
Newer products such as
Pool Water Care Tablets are added to the pool skimmer and quite rapidly remove
the biofilm from the hidden surfaces. AquaFinesse™
products have been successfully used in the European market and in industrial
applications for several years. As with the physical removal products, loosened
& removed biofilm particles must be filtered out of the water then removed from
the system entirely. After initial application, you will notice that the
filter becomes rapidly clogged as the filter traps all of that used biofilm.
Cartridge and diatomaceous earth filters must be chemically cleaned to restore
the filter to a proper working condition.
If biofilm removal has never
been done before, it may be necessary or even advantageous to replace the filter
media (sand, cartridge or DE) - especially in older swimming pools. These products are completely
compatible with all pool care chemical systems (chlorine, bromine, biguanides,
AquaFinesse works with ALL pool chemical care systems including
chlorine, bromine, ionizer (Nature2®
& Frog®) and salt
systems as well as all biguanide products such as BioGuard®
Soft Swim® or Arch
bio-film removal products are NOT compatible with biguanides.
The bottom line for the pool owner and customer is a longer
life of the pool & pool equipment (filter, heater, rails, ladders, etc.) due to
the removal of biofilms as well as biofilm scaling. Chemical consumption should
and will show a marked decrease as chlorine, bromine & other sanitizers can
concentrate on the 1% of planktonic bacteria present in the water. Easier water
balance, less shocking, etc.
Click here to read AquaFinesse
Testimonials from our customers.
AquaFinesse Pool Water Care Tablets
Download & Print a
FREE brochure about Bio-Films in Swimming Pools.
If you still need help, here's how to
store hours): Shelton 203-377-0100