Yes it was DOS attacks on IP address. I had it on DMZ which made it vulnerable. If your not familiar with it and interested here is some information. http://en.m.wikipedia.org/wiki/Denial-of-service_attack
Apex support was great who discovered the issue which allowed me to make some changes to fix problem.
Also, if the Apex is connected to your router, do not use external port 80 to go to your apex. Use a non-standard port.
My tank Temp is 78.
I use Finnex (
http://premiumaquatics.com/aquatic-supplies/FI-HMA-200.html) But The temp control is set just a bit higher than 78, and the Apex does the control. The temp control on the heater is just a backup.......Which I test them a few times a year.
As long as you plan on your heaters to fail, then you will be fine. Use more than 1 heater in your tank.
Here are some things to think about.
1) If one heater quits working the rest can still maintain temperature
2) If one heater sticks on, it is not too high of a wattage that can raise the tank temperature significantly.
3) Run the heaters from different circuits on your apex. (Preferably separate EB's)
4) And be sure the EB8 outlet that runs the heater is in Fallback ON mode....just incase you have a base unit problem, or Aquabus cable gets unplugged.