I have but didn't finish it yet! ;Facepalm
Get in gear man.. lol. years ago when I was keeping fish I found they helped a lot with some fish, also would used dividers I made from egg crate to section off my tanks, I sometimes would keep lights off for a day or so and I found leaning a mirror across tank would really put my tangs in a tizzy ;Troll giving the new guy a chance to settle before they focused on him. A lot of times after "flashing" at themselves in the mirror for hours they will lose interest or forget about the newcomer