I've had these Gbta close to a month now. When I first got them they were extremely stringy/not fatish is you know what I mean. The tentacles are curvy at the ends in the tentacles and somewhat in the middle of the tentacle. The lady was nice and gave me these 2 nems for free because she had too many in her system. She told me to feed it some silversides and it's color will turn greenish and bubble up. I dont have silversides but I do feed them uncoiled shrimp (the size is a smaller than the mouth). My question is should I go out and buy them some silversides? Will that help their overall health? I know that some people don't feed their nems at all. I have a 48in 4bulb t5.