Hey guys. I have a quesiton about my cleaner shrimp I've had this guy for quite a few months and hes more than doubled in size. Never had any problems always all over the tank especially when I feed the tank when I get home from work. There is a spot in the tank he always tends to stay behind some rock work but he's always visible. Today I get home from work he is sitting on the sand bed right out front not really moving. I feed the tank he doens't budge (definitely not like him). This weekend I changed the rock work around and did a water change as my nitrate and phosphates were a little high. I also changed the phosphate remover in my filter. But still I would think this would make things in the tank better not cause any issues. Everything else in the tank looks normal and is behaving as usual. He moved a little since i got home to a new spot behind the rock work and it almost seems like he's shaking a little bit, every couple seconds or minute his antennae jerk realy quick but he doesn't move any more than that. He just shed like a week ago two at the most (i think i read somewhere that the spaztic motion could be them sheding) so i doubt thats what it would be I just wanted to get a few idea and see if there is anything I could do to help him.

