didn't like what? for some reason the frag you have in a lower flow area is going down hill. i suggest you move it to a different location as soon as you can. i'm not saying to put it 6" from a power head, but something about it's current situation is negatively effecting it. since you've had it for 3 weeks, i'm not convinced it's water parameters, but it's hard to say without being there....knowing husbandry habits etc. the first thing i would do is move it.