i just took a 55g from my father. as I was removing the gravel i noticed tons of charcoal mixed in. he said the "charcoal got away from me one day". Is this a big problem? Theres alot of it. thanks for the help
Of the things to worry about, that is a smaller one. If it is mixed in too well to pick out, I would ignore it. It may over time do something for algae but there are so many other things that will help the algae that I would not worry too much about this one. Plants might like this tank better than without. Any chance of plants in the future?