Hey guys first post, been lurking, reading, gathering info for awhile now though. Haven't started any type of business yet, still getting a game plan going. Anyways I'm asking this question more from a diy/homeowner perspective. I have a lot of moss growth and algae black streaks going on and I'm trying to tackle it. I tried MossOut with a hose end sprayer and was not happy with the results, chemicals were kinda harsh. I'm not sure as to what chemicals to use, maybe someone could post a link for me. Also kind of looking at pumps. I don't know which GPH/GPM to look at. Don't know the pros/cons of a 12v vs. a 110/120v, I am on a budget too. I'm pretty much looking to pump out of a tank/garbage can onto the roof without the use of a pressure washer. Thanks in advance for any info guys. I appreciate it!