Getting ready to purchase a RO/DI unit (From BFS, I think, open to suggestions) and some type of auto top off. My current plan is to put the RO unit in my basement with a 50-100gal rubbermaid container, fill 5 gallon jugs out of the container and lug them up three flights to my office where my tank is.
My thoughts are that if I use the 5 gal jugs, then even if the auto top in my tank should go nuts and fill it up, my sump should hold around 5 more gallons without any major problems. Preventing a huge problem being on the second floor and probably a divorce.
Good work out plus, I would save a lot of money in expenses!
Any suggestions on how I might be able to do such a system?
Edit: BTW, I have a 90 gallon tank and losing about 1.5/2 gallons a day in evaporation.
My thoughts are that if I use the 5 gal jugs, then even if the auto top in my tank should go nuts and fill it up, my sump should hold around 5 more gallons without any major problems. Preventing a huge problem being on the second floor and probably a divorce.

Good work out plus, I would save a lot of money in expenses!
Any suggestions on how I might be able to do such a system?
Edit: BTW, I have a 90 gallon tank and losing about 1.5/2 gallons a day in evaporation.