parmoffitt
Member
I have a 90 gallon reef tank up and running for over a year and thriving with no problems. I am wanting to upgrade to a 180 gallon tank. My question is could all the water, substrate, LR and fish be put in the 180 gallon along with new substrate, more cured rock and new water added and the tank not have to cycle? I asked the LFS and they told me there might be a slight spike but they felt it would be o'k to start up the 180 gallon that way. I have reservations and wondered if I am flirting with disaster and maybe I should start over from scratch letting the tank cycle without fish a corals. I had hoped that maybe by putting everything from the 90 gallon into the 180 it would prevent the cycling process?