A natural habitat is an ecological or environmental area where a specific species lives. It is the place in nature that particular species calls home. To help picture what this means, think of a zoo.
Quick Answer. A mixture of vinegar and borax will kill most algae growing on bricks and concrete. Homeowners do not need harsh chemicals to get rid of these pesky growths.
It's generally agreed that for algae removal, a 30ppm chlorine level will kill most active algae. This equates to about 4 lbs of 65% available, calcium hypochlorite pool shock, per 10,000 gallons. If you shock with liquid, about 3 gallons of 12% sodium hypochlorite per 10,000 gallons will do the job.