>>11362877You need to vacuum the pool regularly. That doesn't look like algae as much as it does just dirt, filth, and shit that is going to settle at the bottom of still water, dump all the chemicals you want, its not coming out of the pool without it being manually removed. Either by a vacuum, or with a little above ground pool like that, just drain the thing and hose it out.
Does that thing even have a filter? Even one of those little dinky jobs you hang off the side?
As for the test, it's a little plastic box that is a series of graduated cylinders that you fill with pool water and add a drop of reagents to each vessel so you can compare the levels of the chemicals in your pool.
Whatever you do, don't just leave a standing pool of untreated fresh water sitting for a long period of time or you're just going to breed mosquito.
