The friendliest place on the web for anyone with an interest in aquariums or fish keeping!
If you have answers, please help by responding to the unanswered posts.
Well, the simple answer for me is they all have grown in my aquarium at one time or another save, BGA thank goodness. Just kidding. Just keep researching here, the krib, plant geek, chuck gadd's website etc.
Plant geek has a nice section on different types of algae. As you experience them, you will learn what they are, though I sure wish I didn't know about as many as I do, LOL!