Have 3 clown fish,75lb live rock,some crabs and 3 bubble tip anemones.ve had the clown fish now for about 3 weeks,all about 2 inches but they just swim infront of the tank,have never gone through any live rock caves or even venture to the back of the tank let alone get near any of the anemones.They eat like pigs,super healthy.Do you think they need more time to adjust?Even when the lights go out they just swim against the current all night long.Normal?Am I missing smething?