rockytop02
New member
I was wanting to get some advice on sandbeds. I have a 4" deep sandbed that has been the same for 9 years. I have been having diatoms/cyano or something that has been growing on it lately. I use new RO/DI water. Anyways, just wondering if the sandbed goes bad over time or anything? Doesn anyone change out their sandbeds? Any advice or opinions would be great! Thanks!