What are you planning for an auto top-off, gravity or pump? My RO/DI res is about 25 gallons and I don't use a calcium reactor so I had an issue where my float swtich from the dosing pump would sometimes stick in the on position and as a result had a few floods. What I did to safe guard against this was I simply hooked it up to a timer so it only runs for a few hours at a time. I have it set for an intermitent 7 hours per day maximum so it keeps up nicely with the evap but can never overflow.
I don't know if this is relevent in your case but it's an idea some may not think of.
__________________
Greg
|