They look a bit clunky, do they cover the second outlet when you plug them in?
There's some much cooler stuff available these days with regard to home automation, outlets, switches etc. Controllable via smart phone, tablet & I would think any PC or notebook as well. Some light bulbs now have built in wifi,.... speakers even. Paired with your router you can control them when you're away. Kind of makes some of the features provided by aquarium controllers redundant.
It's still a bit pricey, but I'm sure that will change given a bit of time. The ball is only now really starting to roll with this stuff. I'll hold out a little longer before jumping on the bandwagon. Outlets are now available to replace your regular jobs in wall, similar to installing a gfci.
https://www.ubnt.com/mfi/inwall/
http://www.lifx.com/