It's two different things but I thought at first the little brown pellets were baby shrimp because the shrimp would always be kicking off three or four at a time but then I vacuumed a bunch of them up now I think Italy be diatoms but idk what those really are. Another issue may be some hair algae growin on the wall of my tank. A couple days ago it was brown spots now its green and has hair all along the wall.
Yeah algae is healthy in a tank as long as it isn't completely taking it over. Manual removal with a sponge is really all you can do other than get more live plants to help with it. I notice that keeping the surface of the water slightly moving instead of having it still stops algae growth too.