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Fiberglass interiors can be found in one-piece
fiberglass pools, pool walls constructed of fiberglass
panels or as a lining to the interior surface of a
concrete pool structure.
Fiberglass interiors provide a
smooth, non-porous surface that requires minimal
maintenance or brushing and have no affect on the
pool water chemistry.
Your fiberglass pool interior may or may not have a ceramic or adhesive tile border.
should regularly clean the fiberglass or tile at the waterline using a tile or surface cleaner
available from your pool professional with a sponge or soft brush.
use abrasive
cleaners, steel wool or metal brushes to clean the pool or you may permanently damage the
fiberglass or tile surface and cause rust stains from the steel or metal.
Cleaning the pool interior below the waterline simply consists of routine brushing and
vacuuming. Please refer to the
Routine Maintenance
section for more
Do not allow organic materials (leaves or dirt) to lie on the pool surface. Promptly
remove with a net or vacuum to avoid possible staining or discoloration.
Water chemistry is important! As mentioned above, fiberglass interiors do not affect your pool
water chemistry BUT they can be affected by water chemistry. Just like any other pool interior
surface- it is important to maintain balanced water at all times, paying particular attention to
pH, Total Alkalinity and Calcium levels.
The following are general water balance guidelines for
a fiberglass interior, be sure to refer to the manufacturers information that came with your pool
to be sure these suggestions are the same.
Water balance and chemical parameters are
mentioned in greater detail in the
Basic Water Chemistry
Total Alkalinity
80-150 ppm
Calcium Hardness
225-325 ppm
Total Dissolved Solids
1500 ppm or higher / max 2500
Some Fiberglass manufacturers’ recommendations for Total alkalinity and Calcium
Hardness levels may vary quite a bit from one end to the other.
The parameters listed above show
the lows and highs of most fiberglass pool
It is important to have your pool water tested for mineral and metal content by your pool
All water will have some level of metals present that are not visible becasue
they are completely dissolved. Your pool professional can recommend a sequestering chemical
or metal chelating product to aid in the removal of metals introduced to the pool by fill waters, rain
and the corrosion of metal equipment. If un-treated, fiberglass will act like a magnet to draw
metals out of suspension and the result can be staining, shading, or blotches to your pool
Staining and Scaling
for more information.
NEVER DRAIN a one-piece fiberglass pool without contacting the manufacturer. If conditions
exist that require your pool be drained you must FIRSTconsult your pool installer or manufacturer.
Improper draining can cause hydrostatic ground pressure to lift, crack, or damage the pool structure.