You could sand way a couple of mm of the resin then backfill with properly pigmented resin to hide it?  That may be a way to recover it.

I would certainly go for solid colour pigments on future tables if that is the effect you want.

Warren Penalver
Easy Composites / Carbon Mods - Technical Support Assistant

Is that mark on the surface? does it sand out?  It looks like it could be where the pigments sunk a bit and there is some refraction there.  or it could be where it has sunk/separated it has left a bit of "scum" or ink tide line.  It will probably be following the edge due to surface tension. 

Hopefully it should come off with a polish.

At that level of pigment, I would suggest you are better off going for the solid colour pigments.  You will find it much easier to get a solid colour rather than "overusing" the tinting pigments to get a solid colour.

Warren Penalver
Easy Composites / Carbon Mods - Technical Support Assistant

Hi I have made many river tables now with this same method but in this translucent black I have a problem. I have a line in the resin that follows the shape of my live edge the resin is rock solid it's been on my router sled so it's not a surface problem either the top of the table has the problem but the bottom is very dark  like the pigment has dropped to the bottom in places. It's 100% mixed properly and never had anything like this happen before and to follow a uniform line on the live edge I no somethings up but have no clue what it's was done in two pours at 20mm each I need an answer for this it's driven me crazy all week