Alright so I'm switching to a 30 gallon rimless I just bought. I'm using the same sand and rock and half of the water since I needed the other half or so to keep the fish n corals in another container. How long should I wait till I place them in the new tank. I was thinking in a week since I used half of the original water. Also should I start running the reactor with gfo? Or should I wait? Any suggestions?