went to the LFS today and got a new adult enginere goby at first he was allover the place but for the past 4 hours or so he has just been sitting in 1 spot he is breathing fine and his pectoral fins are moving so he isnt dead he is in there with 4 green chromies and a marron clown that just hides in the rocks till he is eating my NITRATES are about 30 PPM but everything else like my amonia and nitrite are at 0 ppm ph is 8.1 any ideas would be verry appreciated