ROFL, MIke. I would have figured you have a post saved in Word or something by now that you can post when it is called for
How long can you have a sand bed before it starts to crash?
That depends on the system.....bioload, feeding (type, schedule, amount), filtration such as skimmer, husbandry, to name a few off the top of my head. It seems that 3-4 years is what I've noticed reading peoples posts, but some instances it could be as short as a year with different contributing factors. What people start to notice is uncontrollable algae, such as cyano on the bed that doesn't go away. There is nothing wrong with having a sand bed in the tank, as long as the person understands how it functions. That way, it can be cared for and utilized for what it is and not the eternal abyss it was made out to be. The hobbyist can also know what to look for, and deal with issues as they arise.