i wanted to know if i can use my old sand that i had in my 55g saltwater 4 years ago? when i switched to 75g tank i had bought new sand to put in it and seeded it with a bit of my sand from my 55g. the rest of the sand from my 55g i had completely rinsed it with freshwater over and over and over until it was clean and stored it into a bucket.
i wanted to know now 4 years later if i can take that sand and add it to my 75g or will it affect something in my 75g?
i wanted to know now 4 years later if i can take that sand and add it to my 75g or will it affect something in my 75g?