Good grief, since my last post I may have been been out of town more than in! Only was back to see my tanks for short periods of time in between trips lasting 1-2 weeks a piece.
Before I set off I set up two auto top off units, one per tank. They are AutoAqua Smart ATO Micro units. They work really well; just needed to make sure I cleaned the sensors between trips (it can get bio goop accumulating). The clip they came with to anchor the tubing was too small for my 20gals' thickness so I had to zip tie the tubing to the canister filter outlet, which has worked just fine. It's very nice to know I can be gone for a couple weeks with no one watching the tank and come back to see the specific gravity just as I left it.
Since I'm done with crazy travels for the next few months, I went to my favorite aquarium shop to see what interesting stuff was around. Got a couple halloween hermits (Ciliopagurus strigatus) for my reef tank and I *think* I have a Dardanus deformis (a type of anemone hermit) for my non-reef. The ID will remain fuzzy for a while though since I can only see his claws and feet. It's been several hours now and not even lovely smelly silversides can't persuade him to do more than poke a foot out. I might have to keep him in a breeder box until he eats if this is going to be the personality.