Yeah lets see... he was just moving around A LOT less, which is what made me keep an eye on him. I noticed him like really wobbly almost, and couldnt manage to swim to the top. When I scooped him up and put him in a tub for the fridge, he naturally freaked out from being scooped up, and like... I don't know it was almost like he couldnt use his arms, and just flung his head left and right to swim.. not sure, ive only seen one other thread who described what mine was doing, and when i contacted them they said the problem just seemed to go away.. he also just seems like he's kind of heavy the way he moves, which makes me think he ate the sand :s
Ah, mine is only 3.5 inches.. didn't know they had to be a certain size :s
I don't know what else it could've been, he only started acting strange the day I put the sand it :/ Perhaps he accidentally swallowed a large amount and couldn't handle it.