LaMotte Pool & Spa Owner's Handbook - Manual (Page 17)

TROUBLE-SHOOTING WATER
PROBLEMS
ALGAE
Algae is probably the most annoying water problem in outdoor pools,
since it is so unsightly and difficult to destroy quickly. In many cases,
several treatments and daily brushing may be required to successfully
eliminate an algae problem. Algae multiplies rapidly, and by the time the
human eye notices it, there are already billions of algae cells in the pool.
Most pool professionals will agree that the two most frequent complaints
received about pools are related to algae and cloudy water. Green algae
can make a pool especially cloudy. Algae will clog filter systems and make
pool surfaces slippery. The three most common colors of algae are green,
black and mustard (yellow). The best way to avoid an algae problem is to
keep at least 1.0 ppm of free available chlorine circulating throughout the
pool water at all times. For persistent algae problems, an algicide may
be used.
(See Algae chart on next page.)
15