I would do everything Jeff just mentioned with the exception to the sand.I would go with new sand, either dry and seed it with your old sand or go with all LS...I would use half of the water from the 100g and the rest saltmix, transfer the rocks, get it wet, let the cloudiness clear up then move all the corals and fish over. Althought this can't happen until you get the new setup plumbed and ready to rock. If you need help, I'm located in Anaheim too ...