I agree that this is a serious problem, Dugg. My first plan is going to be to first remove all of the livestock that I can tonight and do the water change.
As for the future plan...
SAND: I might change out the sand as I really haven't liked the color of my pavestone anyhow. The bags I got seem to have a LOT of black colored stuff, which is sloppy looking. And I am a perfectionist, so it bugs me a lot.
ROCK: As for the rock, I don't think I can bare to get rid of it - I just love my pillar too much! I think I will just have to accept the fact that I need to keep on top of my carbon & GFO, changing them about twice as frequently as normal. And I think I might run polyfilter for a couple months or so, and then maybe once a week every month for the next 6 or so. I might also look into other chemical filtration media - I have heard that chemi-pure is decent for purifying these sorts of toxins as well.
Oh well, guess I am sort of starting over. At least I will likely keep my corals alive, and maybe the eel. That would be a nice consolation prize.
Also, now that I have the stands almost complete for the 25g secondary display tank and the 29g sump, and that our
COMAS group buy of haitian lettuce rock is about to come in, I might just go ahead and cure the new rock in the full system. That would make it easier to do water changes while curing, etc. That might be bad on the current rock, however. That also might be bad on the new rock as the old rock still has more of the toxins in it.
So I suppose I should just setup the 29 & 25 together (for curing some of that rock) and then plumb them into the 47g tank after 3-4 weeks when thiings have stabilized a little with the main tank.
Hmmmnnn................