I just saw my new 75 gal tank that I got from a friend that has been running for 2 years or more. They have this rusty red algea thing taking over the sand and rock. Is it good, which I don't think it is that and how do I remove it.
Could you describe it more? Is it like a film, with air-bubble in places? Could be diniflagellates. ANsty things! Here's a pic of some that USED to be in my 55.