Considering ATO

[Myka]

I won't use anything other than a Tunze Osmolator. Never had any issues with them. I have two that are 3 or 4 years old.

Originally Posted by fishytime

never plumb a never ending source of fresh water directly to your tank.......dont be lazy and use a reservoir

Agreed. 100%

Originally Posted by sphelps

I see little difference between filling a sump or a bin...

If there is a malfunction the difference is a wet floor vs a potential crash from sudden salinity drop. I know of at least 2 or 3 tanks that have had complete crashes this way. Redundancy is insurance, laziness is risk.