No chlorinated water
If you live in a place that gets a lot of rain, you can’t really avoid getting stains on your concrete balcony or garden tiles. But the fact that it’s unavoidable doesn’t make it any less annoying. A lot of people think chlorinated water is the solution to the green glow, since it gets rid of moss and algae. We wouldn’t recommend this, though, because it’s really bad for the environment. Another solution people often try is getting out the high-pressure sprayer, but this is only of short term help. The high-pressure sprayer will change the structure of the material which causes it to be more rough and porous. This actually makes it even more suitable for moss and algae to grow on!
