Troy-I will take "can I change your water for $400"
As for Christy-lot's of good advice here, maybe look at your water quality before it goes into the tank(phosphates).
As for nori being the source problem-no, I would say not as I feed my tang the same and sometimes he doesn't get it all, it falls to the rocks where the crabs or snails would cleanup any leftovers- and that's in a 27gl.
The skimmer your using should also be more than enough-if you haven't got a Mag 7 on there, that would kick up the performance big time :!:
Maybe it's not such a bad idea to let a trust worthy reefer or two come over for a second opinion.
my two bits-Rich
