I was going to ask about lights too.
Usually when crispas go to rockwork rather than sand it is reaching for more light, but as bleached as it is it really needs to be acclimated to strong light.
Small feeding should help.
Hopefully it sets, but it is pretty bleached, and hopefully the bag issues didn't affect it(if it attached to bag I'm guessing foot was ok at that time)
FWIW mine was originally like that, and 4" at purchase to 2 feet later.
I had mine for 5 and half years before I downsized tanks and sold him w/ it.