Yes, welcome!

We frequently get newbies who've been "pool stored". You now know exactly what that means. They recommend all kinds of stuff for all kinds of money and nothing helps. They see you as a pigeon. Sorry for that.

But as Janet says, you are wise to now be really, really skeptical. So I will add that when you get them to test your water, have them test for iron and copper. You are using well water and they frequently have a lot of metal in them.

My hypothesis is that you are rich in iron--that's the only way I know of for clean well water to turn a pool brown so quickly. But it's just a hypothesis and needs to be tested.

Meanwhile, don't let chlorine levels fall or you WILL have an algae outbreak. I KNOW people say solve the metal problem first, but we don't know that it's a metal problem, and we DO know algae will grow.

BTW, if you have metals, a flocculant isn't the right additive, neither is a clarifier. A sequestrant is, at that time, appropriate. But not till tests show metals.