So, like the obsessor I am, I have only had my 14 g cube for a month maybe a month and a half, and just got a 29g tank. I know, I know, I'm going to get ahead of myself, walk before I run... But, I couldn't pass it up! So, my question is, I REALLY like the look of the black sand, but I am hearing mixed reviews. I hear that some have magnetic pieces in it that get stuck in the mag float and scratch the glass, that you can see all the poo and garbage from the tank on it. What is everyone's opinions? What do y'all keep in your tanks?