little green dots on the glass

[nealio]

So I have these little green dots on the glass of my tank. Very hard to get rid of. I have seen a couple places saying to just scrape it off with a razor blade. (I have a glass tank)

Can I do this with all the water in it? Or should I wait until I clean the tank next time.

Thanks *SUPERSMIL

 

[PlecoCollector]

Those are spots of algae.
As far as I'm aware, you can razor-blade 'em with water in the tank. Have you tried scrubbing them with one of those pads you find on tank cleaning brushes? I found that they come off (though not very easily) if you take the pad off and use it to scrub the tank.

 

[GIS Guy]

A good time to do it would be with a water change.
Reduce the water level so the scrapping motion doesn't splash water over the top.

 

[jamiecarter]

hehe i have these and yes there a bloody pain to get rid off what iam going to do is have a 5 day blackout....

 

[JustOneMore20]

Another good tool to use is a credit card (probably best to use an old one ) Thats what I use and it gets the job done.

Its green spot algae. You can learn about it on this site. Its considered normal for planted tanks. I searched it on google and only found one website that had a cause on it. It said excess lights and excess nutrients. That's probably true for alot of algaes though. I've been told before that spot algae is a sign of a healthy tank.

Make sure your tank doesn't get any direct sunlight...that will cause some types of algae.

I would just try to scrape it off with a razor blade or credit card with every water change. That will keep it down to a more manageable level.