if it is alge there are spot on the class too.. do i clean it and with what. Or just wait and and goes away. What about a snail or something to clean it off??
a snail will take care of that unless it is coraline. But if it is a new tank. like new enough to get diatoms, you probably dont have coraline. You can remove this with a scraper, mag-float, or an old credit card.
If your still cycling then dont add livestock. You can just scrape it off if it gets out of control but dont get rid of it all cuz when you do add your cleanup crew they will need food.
they sell a nano reef packet here and i got a 20gl tank. would that be a good buy to keep things in shape 4 now?? its a fish only right now, with a chocolate starfish and a damsel??