having 2- 2" drains, = peace of mind
having 1" return = safty
having a pump at less than 1800gph = easy

forgeting to turn off your ro. = The only thing anyone can gauruntee
come on everyone has done it

Considering you typically waste 2/3 of the water you use to make ro/di you may as well run the overflow from the storage unit to the same drain, that way there is no flood just a high water bill.

Those are all great tips to consider, thanks guys.

I am not too worried about the RO water as I have a full bathroom in the basement with a bathtub where I will be making the RO water in and if the water overflows from the bucket, it won't be a big deal as the container will be sitting in the tub.

As I can see, if the design is planned well, the flood occurrence cant be very well be under control. I have read numerous thread where floods could of been avoided.