Normal algae???

[JustKyle]

Hello all, after about a month and a half of having this tank going, this algae all of a sudden has started taking over my tank. Not quite sure if it’s good algae or bad algae? All of my levels are reading good, nitrates are zero, and phosphates aren’t zero, but they’re less than .25. Any ideas? I have a few pics of how my tank looked one week ago, and how it’s looking now.

 

[PokeFish]

Well definatley not good... I had those in my tanks too. What i did was i vacuumed my sand bed often, got some astrea and trochus snails, and every day i got a turkey baster and blew at the parts of it that were on the rocks. Eventually it got removed