There are 4 main categories to maintaining a healthy and safe swim environment.

1.  Chemical Balance
2.  Filtration
3.  Circulation
4.  Cleaning/Removal of Debris
Excluding a leak, every pool related problem fits in one of the categories above.  Balancing your chemicals means insuring chlorine, pH, alkalinity, hardness and cyanuric acid are all at optimal levels.
Filtration and Removing of Debris can be tied together, the difference being the removal of debris is meant for vacuuming up leaves from the bottom of the pool, while your filter is designed to trap finer contaminants like bugs and dirt.
Circulation is the proverbial red-headed stepchild of the bunch.  It’s often overlooked when diagnosing pool issues and problems.  Circulation can be cut up into sub categories.  For example, make sure your pool pump runs and appropriate amount of hours per day.  Here in Boca Raton, the summers are hot and the sun is strong.  That’s going to require your pump to run longer than a pool in less harsh conditions.
But the sub-category that bears the least attention, when in fact it can be the root of algae blooming very often, is brushing.  Algae, bacteria, loves not to be bothered.  That’s why you’ll see it pop up on walls, and steps before the floor of the pool.  That’s where brushing comes into play.  By brushing your pool walls, steps, and floors on, at least, a weekly basis, you’re insuring that microbacteria is forced off the walls and into circulation, a place that bacteria doesn’t like being.
As a full-service pool cleaning provider for Boca Raton, FL we encounter a lot of algae issues that stem, simply, from a lack of brushing.
If you’re sick of dealing with algae and want a top notch pool service provider in Boca Raton, call Tiki Pool Services (561) 320-1899