I have been spending some time on another board site and have run into people claiming that sps keepers with nitrate levels over 20 and as high as 180 ppm are keeping sps... to be honest, i dont think anything over a couple ppm are acceptable and taht i am being fed nonsense... as well as being told they dont know how anyone could acheive an ULNS... i feel there is no way any of these claims can be true... anyone with any other thoughts??? i have been conversing with them about this to the point where i am jus getting frustrated with it all... i mean, a few trates', sure... but 20, let alone 100+ or even 180 ppm and i jus feel like they are lying to me and themselves... i guess i jus feel like RC is the authority amongst reefing message boards, and i thought i would bring the debate here... any input and opinion, whether alike or different from mine is completely acceptable and will be handled on my end with attention and courtesy...