I had almost 2 years break in the hobby. I can see a lot of good changes in equipment. My top 1 is reeffactory thermo control, with online access, sms/@ notification when temerature is too low or too high. I can set up temperature level when heater starts up an cooling as well. I can also get notification when this stuff has lost connection with WiFi what means that there is no AC supply at my home. Awesome stuff. I'm waiting for PH monitoring device from reeffactory.