I've had zero problems with either.....I actually have two colonies of Duncans. Throw some mysis at em once in awhile, and I feed my tank cyclopeeze or rotifers a few times a week....they've thrived
An old aquarium store near my fathers store took empty plastic shotgun shell the plastic wad inside make excelent bioballs just in case you needed something that you baseically can get at any walmart
Congrats on the BEAUTIFUL tank Melon. I love the color in the Duncans, mine just sprouted 9 heads off of the 1 that I originally bought. I love duncans.