saltwater6900
New member
i am going to set my 90 up soon like in next week i hope, but i have a 72 bow now and if i change everything in to the 90, which i have many fish and a lot of corals will i need to put stuff in week by week? i am going to put the 72 gallons in the 90 and then fill the other 18 gallons with new water. so it will really be like a water change. so my question is do i need to put fish in one a week or can i do all into new tank? it is not a huge change. and i dont want 2 tank running well i would like both but i just cant do that only 1