Options for a Nano Auto Top Off

[manse]

I have the tunze Osmolator.

Pricey, but it has an optical sensor and a back up mechanical sensor for overflow.

It is *very* accurate, and will put what seems like only a tiny amount in at a time. Keeps the SG super stable.

 

[intenseimage]

I have the JBJ ATO paired up with a MJ1200. The float switches are very small and there are several install options for the 2 switches that come in the kit.

I hav a 5 gallon bucket from Home Depot (that orange paint bucket they sell) under my tank with the MJ stuck to the bottom and one of the switches hooked up using their brackets (so I dont run dry). The unit is mounted inside the stand and just have some clear tubing run up and clipped to my skimmer. This way the fresh water gets pumped into the "return" side of my BakPak to mix a bit with the saltwater before entering the tank.