I have a 75 gal tank with in sump wet/dry filter. I put 100 lbs. of CaribSea
live sand in with appx 50 lbs of base rock and 40 lbs of dead "live rock".
It has been running about 6 days and Ph is 7.5, Ammonia is 4.0, Nitrite is
about .50 and nitrates are 0. LFS said all the sand is probably dead...