I took 60 gallons of old water tho the new house and have 30 gallons of new water mixing. fish and half my live rock(50 lbs) are in a 30 gallon with a powerhead and heater. there is an inch and a half of sugar sand in the tank with just enough water to cover it. will scoop it out with a net tomorrow before mover gets here to move it.are there any other important things to do? the tank is 120 gallons btw.