So I'm currently running a 55 gallon reef right now. However I'm moving soon and see this as the perfect time to upgrade to maybe a 90 or 125 depending on what kind. Deals I can find when the time comes. So question is, how much more maintenance is a 90 or 125 compared to a 55? How much can I expect my salt costs to go up? How about rodi water, how much are you topping off a day? I currently do a 10 gallon water change every 2 weeks, (or so ) lol and top off about a gallon a day. A 200 gallon box of salt usually last me at least two months of not more.