Hammer Help

[rapurcell85]

Any thoughts on why my hammer may be pulled in? Its been looks worse over the past few weeks and I can't figure out what's going on with it.
45ppm nitrates, normally closer to 30
0.07ppm phosphate down from 0.1 to 0.2
440ppm Ca,been at 460 recently
1350ppm Mg, been at 1400 recently
8.1 Alk
7.8 pH, been closer to 8.2 recently
35 ppt salinity

 

[moldos]

could it be the nitrates? is something picking at it?