Just watched in ReefDudes live stream that, Coralvue announced the new Control XS. That's exactly what I'm waiting for the quarantine rack upgrade. A Control XS + 3 temperature probes + 3 power strip will be just enough to take care of the 3 QT tank on my rack. Each tank has a filter, a heater, a circulation pump, and a light. The nice thing on this setup will be, the whole rack is controlled together, so I can turn on feeding mode or water change mode for all of them at the same time. But each tank will have its own power strip, so I can easily turn the whole tank on or off. That's actually very important feature and was missing from my current setup, because it's rare that all 3 tanks are running. Most of the time only some of them are running. So I have to unplug all the stuff on the tank that's not running. With Hydros setup, I can push a button to turn the tank on, so much easier.